phép trừ phân số: 23/4 - 9/2 =

\(\begin{array}{*{20}{c}}{23}\\\hline4\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}9\\\hline2\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}5\\\hline4\end{array}\)

\(\begin{array}{*{20}{c}}{46}\\\hline{49}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}4\\\hline7\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{18}\\\hline{49}\end{array}\)

\(\begin{array}{*{20}{c}}{45}\\\hline{22}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{11}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{39}\\\hline{22}\end{array}\)

\(\begin{array}{*{20}{c}}{33}\\\hline{95}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}2\\\hline{19}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{23}\\\hline{95}\end{array}\)

\[\begin{array}{*{20}{c}}{46}\\\hline{85}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{17}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{31}\\\hline{85}\end{array}\]

\[\begin{array}{*{20}{c}}{43}\\\hline{10}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}7\\\hline2\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}4\\\hline5\end{array}\]

\(\begin{array}{*{20}{c}}{43}\\\hline{16}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{13}\\\hline8\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{17}\\\hline{16}\end{array}\)

\(\begin{array}{*{20}{c}}{37}\\\hline{30}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline{10}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}2\\\hline{15}\end{array}\)

\[\begin{array}{*{20}{c}}{37}\\\hline{99}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{13}\\\hline{33}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline{99}\end{array}\]

\(\begin{array}{*{20}{c}}{29}\\\hline{12}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}5\\\hline4\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}7\\\hline6\end{array}\)

\(\begin{array}{*{20}{c}}{37}\\\hline{16}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}1\\\hline2\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{29}\\\hline{16}\end{array}\)

\(\begin{array}{*{20}{c}}{49}\\\hline{40}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}1\\\hline8\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{11}\\\hline{10}\end{array}\)

\[\begin{array}{*{20}{c}}{45}\\\hline{34}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline{17}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{23}\\\hline{34}\end{array}\]

\[\begin{array}{*{20}{c}}{49}\\\hline{126}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{42}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{17}\\\hline{63}\end{array}\]

\(\begin{array}{*{20}{c}}{45}\\\hline{64}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}3\\\hline8\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{21}\\\hline{64}\end{array}\)

\(\begin{array}{*{20}{c}}{37}\\\hline9\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}7\\\hline3\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{16}\\\hline9\end{array}\)

\(\begin{array}{*{20}{c}}5\\\hline{39}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}1\\\hline{13}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}2\\\hline{39}\end{array}\)

\(\begin{array}{*{20}{c}}{19}\\\hline{27}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}5\\\hline9\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}4\\\hline{27}\end{array}\)

\[\begin{array}{*{20}{c}}{13}\\\hline9\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}2\\\hline3\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}7\\\hline9\end{array}\]

\(\begin{array}{*{20}{c}}{31}\\\hline{40}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}3\\\hline8\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}2\\\hline5\end{array}\)

\(\begin{array}{*{20}{c}}{41}\\\hline{20}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}8\\\hline5\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}9\\\hline{20}\end{array}\)

\[\begin{array}{*{20}{c}}{49}\\\hline{27}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}5\\\hline3\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}4\\\hline{27}\end{array}\]

\(\begin{array}{*{20}{c}}{47}\\\hline{64}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{23}\\\hline{32}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline{64}\end{array}\)

\(\begin{array}{*{20}{c}}{67}\\\hline{60}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}7\\\hline{20}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{23}\\\hline{30}\end{array}\)

\[\begin{array}{*{20}{c}}{29}\\\hline{16}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}1\\\hline4\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{25}\\\hline{16}\end{array}\]

\(\begin{array}{*{20}{c}}{47}\\\hline{30}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}7\\\hline6\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}2\\\hline5\end{array}\)

\[\begin{array}{*{20}{c}}{33}\\\hline{14}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline{84}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{187}\\\hline{84}\end{array}\]

\(\begin{array}{*{20}{c}}{19}\\\hline{70}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}1\\\hline{35}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{17}\\\hline{70}\end{array}\)

\[\begin{array}{*{20}{c}}{31}\\\hline{96}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}9\\\hline{32}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline{24}\end{array}\]

\(\begin{array}{*{20}{c}}{25}\\\hline{28}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}3\\\hline4\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline7\end{array}\)

\[\begin{array}{*{20}{c}}{33}\\\hline{20}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}7\\\hline5\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline4\end{array}\]

\(\begin{array}{*{20}{c}}{23}\\\hline{25}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{22}\\\hline{75}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{47}\\\hline{75}\end{array}\)

\[\begin{array}{*{20}{c}}7\\\hline{16}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{96}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{37}\\\hline{96}\end{array}\]

\(\begin{array}{*{20}{c}}{37}\\\hline{88}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{17}\\\hline{44}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}3\\\hline{88}\end{array}\)

\(\begin{array}{*{20}{c}}{47}\\\hline{10}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{16}\\\hline5\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}3\\\hline2\end{array}\)

\(\begin{array}{*{20}{c}}{45}\\\hline{49}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}2\\\hline7\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{31}\\\hline{49}\end{array}\)

\[\begin{array}{*{20}{c}}{43}\\\hline{20}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}7\\\hline5\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}3\\\hline4\end{array}\]

\(\begin{array}{*{20}{c}}3\\\hline{18}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}1\\\hline{72}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{11}\\\hline{72}\end{array}\)

\(\begin{array}{*{20}{c}}{89}\\\hline{35}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{16}\\\hline7\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}9\\\hline{35}\end{array}\)

\(\begin{array}{*{20}{c}}{48}\\\hline{25}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}6\\\hline5\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{18}\\\hline{25}\end{array}\)

\[\begin{array}{*{20}{c}}{23}\\\hline{77}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}2\\\hline{11}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}9\\\hline{77}\end{array}\]

\(\begin{array}{*{20}{c}}{29}\\\hline{32}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}5\\\hline8\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}9\\\hline{32}\end{array}\)

\(\begin{array}{*{20}{c}}{33}\\\hline{40}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}2\\\hline5\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{17}\\\hline{40}\end{array}\)

\(\begin{array}{*{20}{c}}{39}\\\hline{28}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}9\\\hline7\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}3\\\hline{28}\end{array}\)

\[\begin{array}{*{20}{c}}{41}\\\hline{24}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}7\\\hline6\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{13}\\\hline{24}\end{array}\]

\(\begin{array}{*{20}{c}}{37}\\\hline{18}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline6\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}2\\\hline9\end{array}\)

\(\begin{array}{*{20}{c}}{33}\\\hline{50}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}2\\\hline5\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{13}\\\hline{50}\end{array}\)

\(\begin{array}{*{20}{c}}{49}\\\hline{135}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{16}\\\hline{45}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline{135}\end{array}\)

\[\begin{array}{*{20}{c}}{43}\\\hline{36}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}1\\\hline6\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{37}\\\hline{36}\end{array}\]

\(\begin{array}{*{20}{c}}{47}\\\hline{28}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline7\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}3\\\hline{28}\end{array}\)

\(\begin{array}{*{20}{c}}{23}\\\hline{144}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}1\\\hline{48}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}5\\\hline{36}\end{array}\)

\(\begin{array}{*{20}{c}}{47}\\\hline{24}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline6\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline8\end{array}\)

\[\begin{array}{*{20}{c}}{19}\\\hline{72}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}1\\\hline{36}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{17}\\\hline{72}\end{array}\]

\(\begin{array}{*{20}{c}}{29}\\\hline{54}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}1\\\hline6\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{10}\\\hline{27}\end{array}\)

\(\begin{array}{*{20}{c}}{35}\\\hline{18}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline6\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline9\end{array}\)

\(\begin{array}{*{20}{c}}{39}\\\hline{100}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{17}\\\hline{50}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline{20}\end{array}\)

\[\begin{array}{*{20}{c}}{23}\\\hline{108}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{36}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}2\\\hline{27}\end{array}\]

\(\begin{array}{*{20}{c}}{19}\\\hline{120}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{40}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline{12}\end{array}\)

\(\begin{array}{*{20}{c}}{45}\\\hline{28}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}9\\\hline7\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}9\\\hline{28}\end{array}\)