phép trừ phân số: 13/7 - 4/7 =

\(\begin{array}{*{20}{c}}{13}\\\hline7\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}4\\\hline7\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}9\\\hline7\end{array}\)

\(\begin{array}{*{20}{c}}4\\\hline3\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}2\\\hline3\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}2\\\hline3\end{array}\)

\(\begin{array}{*{20}{c}}{14}\\\hline{11}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}1\\\hline{11}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{13}\\\hline{11}\end{array}\)

\(\begin{array}{*{20}{c}}5\\\hline2\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}3\\\hline2\end{array}{\rm{  =  1}}\)

\(\begin{array}{*{20}{c}}{13}\\\hline{10}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline{10}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline5\end{array}\)

\(\begin{array}{*{20}{c}}7\\\hline5\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}6\\\hline5\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline5\end{array}\)

\(\begin{array}{*{20}{c}}{10}\\\hline9\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}8\\\hline9\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}2\\\hline9\end{array}\)

\[\begin{array}{*{20}{c}}5\\\hline4\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}3\\\hline4\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline2\end{array}\]

\[\begin{array}{*{20}{c}}9\\\hline8\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}7\\\hline8\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline4\end{array}\]

\[\begin{array}{*{20}{c}}{11}\\\hline6\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}5\\\hline6\end{array}{\rm{  =  1}}\]

\(\begin{array}{*{20}{c}}{17}\\\hline{12}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}1\\\hline{12}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}4\\\hline3\end{array}\)

\(\begin{array}{*{20}{c}}5\\\hline7\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}1\\\hline7\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}4\\\hline7\end{array}\)

\[\begin{array}{*{20}{c}}{33}\\\hline{24}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}7\\\hline{24}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{13}\\\hline{12}\end{array}\]

\(\begin{array}{*{20}{c}}{76}\\\hline{45}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}8\\\hline{45}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{68}\\\hline{45}\end{array}\)

\[\begin{array}{*{20}{c}}{23}\\\hline{18}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}8\\\hline{18}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}5\\\hline6\end{array}\]

\[\begin{array}{*{20}{c}}{17}\\\hline{66}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{13}\\\hline{66}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}2\\\hline{33}\end{array}\]

\(\begin{array}{*{20}{c}}{43}\\\hline{29}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{13}\\\hline{29}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{30}\\\hline{29}\end{array}\)

\[\begin{array}{*{20}{c}}{10}\\\hline{81}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}8\\\hline{81}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}2\\\hline{81}\end{array}\]

\(\begin{array}{*{20}{c}}{19}\\\hline{17}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}8\\\hline{17}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{11}\\\hline{17}\end{array}\)

\[\begin{array}{*{20}{c}}{67}\\\hline{40}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{40}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}8\\\hline5\end{array}\]

\(\begin{array}{*{20}{c}}{53}\\\hline{34}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{21}\\\hline{34}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{16}\\\hline{17}\end{array}\)

\(\begin{array}{*{20}{c}}{21}\\\hline{76}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}9\\\hline{76}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}3\\\hline{19}\end{array}\)

\(\begin{array}{*{20}{c}}{49}\\\hline{32}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}9\\\hline{32}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}5\\\hline4\end{array}\)

\(\begin{array}{*{20}{c}}{31}\\\hline{60}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline{60}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}1\\\hline3\end{array}\)

\[\begin{array}{*{20}{c}}{25}\\\hline{67}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{10}\\\hline{67}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{15}\\\hline{67}\end{array}\]

\(\begin{array}{*{20}{c}}{40}\\\hline{27}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{10}\\\hline{27}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{10}\\\hline9\end{array}\)

\(\begin{array}{*{20}{c}}{50}\\\hline{63}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}8\\\hline{63}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}2\\\hline3\end{array}\)

\(\begin{array}{*{20}{c}}{73}\\\hline{44}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{19}\\\hline{44}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{27}\\\hline{22}\end{array}\)

\(\begin{array}{*{20}{c}}{41}\\\hline{28}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}9\\\hline{28}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}8\\\hline7\end{array}\)

\[\begin{array}{*{20}{c}}{86}\\\hline{50}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{13}\\\hline{50}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{73}\\\hline{50}\end{array}\]

\(\begin{array}{*{20}{c}}{31}\\\hline{64}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{13}\\\hline{64}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}9\\\hline{32}\end{array}\)

\(\begin{array}{*{20}{c}}{29}\\\hline{22}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}1\\\hline{22}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{14}\\\hline{11}\end{array}\)

\(\begin{array}{*{20}{c}}{49}\\\hline{48}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{17}\\\hline{48}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}2\\\hline3\end{array}\)

\(\begin{array}{*{20}{c}}{97}\\\hline{56}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{25}\\\hline{56}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}9\\\hline7\end{array}\)

\[\begin{array}{*{20}{c}}{52}\\\hline{33}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}8\\\hline{33}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}4\\\hline3\end{array}\]

\(\begin{array}{*{20}{c}}{31}\\\hline{23}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}6\\\hline{23}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{25}\\\hline{23}\end{array}\)

\(\begin{array}{*{20}{c}}{53}\\\hline{62}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{17}\\\hline{62}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{18}\\\hline{31}\end{array}\)

\(\begin{array}{*{20}{c}}{61}\\\hline{20}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}9\\\hline{20}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{13}\\\hline5\end{array}\)

\[\begin{array}{*{20}{c}}{71}\\\hline{43}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}9\\\hline{43}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{62}\\\hline{43}\end{array}\]

\[\begin{array}{*{20}{c}}{13}\\\hline{15}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline{15}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}2\\\hline{15}\end{array}\]

\[\begin{array}{*{20}{c}}{98}\\\hline{55}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{12}\\\hline{55}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{86}\\\hline{55}\end{array}\]

\(\begin{array}{*{20}{c}}{49}\\\hline{75}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{14}\\\hline{75}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}7\\\hline{15}\end{array}\)

\(\begin{array}{*{20}{c}}{67}\\\hline{41}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{12}\\\hline{41}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{55}\\\hline{41}\end{array}\)

\(\begin{array}{*{20}{c}}{79}\\\hline{47}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{10}\\\hline{47}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{69}\\\hline{47}\end{array}\)

\(\begin{array}{*{20}{c}}9\\\hline{103}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}7\\\hline{103}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}2\\\hline{103}\end{array}\)

\(\begin{array}{*{20}{c}}{11}\\\hline{10}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{10}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}4\\\hline5\end{array}\)

\(\begin{array}{*{20}{c}}{23}\\\hline{19}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}7\\\hline{19}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{16}\\\hline{19}\end{array}\)

\[\begin{array}{*{20}{c}}{39}\\\hline{77}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}6\\\hline{77}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}3\\\hline7\end{array}\]

\(\begin{array}{*{20}{c}}{65}\\\hline{39}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{16}\\\hline{39}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{49}\\\hline{39}\end{array}\)

\(\begin{array}{*{20}{c}}{16}\\\hline{69}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{14}\\\hline{69}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}2\\\hline{69}\end{array}\)

\(\begin{array}{*{20}{c}}{61}\\\hline{38}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}7\\\hline{38}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{27}\\\hline{19}\end{array}\)

\(\begin{array}{*{20}{c}}{43}\\\hline{78}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{25}\\\hline{78}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}3\\\hline{13}\end{array}\)

\(\begin{array}{*{20}{c}}{19}\\\hline{65}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline{65}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}8\\\hline{65}\end{array}\)

\(\begin{array}{*{20}{c}}{91}\\\hline{53}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{19}\\\hline{53}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{72}\\\hline{53}\end{array}\)

\(\begin{array}{*{20}{c}}{10}\\\hline{109}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{109}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}5\\\hline{109}\end{array}\)

\(\begin{array}{*{20}{c}}{77}\\\hline{46}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}{13}\\\hline{46}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{32}\\\hline{23}\end{array}\)

\[\begin{array}{*{20}{c}}{89}\\\hline{52}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}7\\\hline{52}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}{41}\\\hline{26}\end{array}\]

\(\begin{array}{*{20}{c}}{19}\\\hline{30}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}1\\\hline{30}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}3\\\hline5\end{array}\)

\[\begin{array}{*{20}{c}}{59}\\\hline{36}\end{array}{\rm{ }} - {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{36}\end{array}{\rm{  =  }}\begin{array}{*{20}{c}}3\\\hline2\end{array}\]