\(\frac{5}{{12}} - \frac{2}{{11}} = \)...

\(\begin{array}{l}\frac{5}{{12}} - \frac{2}{{11}} = \frac{{55}}{{132}} - \frac{{24}}{{132}}\\ = \frac{{31}}{{132}}\end{array}\)

\(\begin{array}{l}\frac{7}{{11}} - \frac{1}{5} = \frac{{35}}{{55}} - \frac{{11}}{{55}}\\ = \frac{{24}}{{55}}\end{array}\)

\(\begin{array}{l}\frac{6}{7} - \frac{3}{{13}} = \frac{{78}}{{91}} - \frac{{21}}{{91}}\\ = \frac{{57}}{{91}}\end{array}\)

\[\begin{array}{l}\frac{4}{5} - \frac{1}{8} = \frac{{32}}{{40}} - \frac{5}{{40}}\\ = \frac{{27}}{{40}}\end{array}\]

\(\begin{array}{l}\frac{6}{{13}} - \frac{1}{9} = \frac{{54}}{{117}} - \frac{{13}}{{117}}\\ = \frac{{41}}{{117}}\end{array}\)

\(\begin{array}{l}\frac{5}{8} - \frac{2}{9} = \frac{{45}}{{72}} - \frac{{16}}{{72}}\\ = \frac{{29}}{{72}}\end{array}\)

\(\begin{array}{l}\frac{7}{9} - \frac{1}{6} = \frac{{14}}{{18}} - \frac{3}{{18}}\\ = \frac{{11}}{{18}}\end{array}\)

\(\begin{array}{l}\frac{4}{7} - \frac{2}{{14}} = \frac{{60}}{{105}} - \frac{{14}}{{105}}\\ = \frac{{46}}{{105}}\end{array}\)

\(\begin{array}{l}\frac{5}{{11}} - \frac{3}{8} = \frac{{40}}{{88}} - \frac{{33}}{{88}}\\ = \frac{7}{{88}}\end{array}\)

\(\begin{array}{l}\frac{6}{{11}} - \frac{3}{{14}} = \frac{{84}}{{154}} - \frac{{33}}{{154}}\\ = \frac{{51}}{{154}}\end{array}\)

\(\begin{array}{l}\frac{7}{{12}} - \frac{3}{{14}} = \frac{{49}}{{84}} - \frac{{18}}{{84}}\\ = \frac{{31}}{{84}}\end{array}\)

\(\begin{array}{l}\frac{4}{5} - \frac{2}{{13}} = \frac{{52}}{{65}} - \frac{{10}}{{65}}\\ = \frac{{42}}{{65}}\end{array}\)

\(\begin{array}{l}\frac{6}{7} - \frac{1}{9} = \frac{{54}}{{63}} - \frac{7}{{63}}\\ = \frac{{47}}{{63}}\end{array}\)

\(\begin{array}{l}\frac{5}{7} - \frac{3}{8} = \frac{{40}}{{56}} - \frac{{21}}{{56}}\\ = \frac{{19}}{{56}}\end{array}\)

\[\begin{array}{l}\frac{4}{9} - \frac{1}{{10}} = \frac{{40}}{{90}} - \frac{9}{{90}}\\ = \frac{{31}}{{90}}\end{array}\]

\(\begin{array}{l}\frac{7}{{10}} - \frac{2}{7} = \frac{{49}}{{70}} - \frac{{20}}{{70}}\\ = \frac{{29}}{{70}}\end{array}\)

\(\begin{array}{l}\frac{5}{9} - \frac{2}{7} = \frac{{35}}{{63}} - \frac{{18}}{{63}}\\ = \frac{{17}}{{63}}\end{array}\)

\[\begin{array}{l}\frac{6}{{13}} - \frac{2}{5} = \frac{{30}}{{65}} - \frac{{26}}{{65}}\\ = \frac{4}{{65}}\end{array}\]

\(\begin{array}{l}\frac{4}{{11}} - \frac{1}{6} = \frac{{24}}{{66}} - \frac{{11}}{{66}}\\ = \frac{{13}}{{66}}\end{array}\)

\(\begin{array}{l}\frac{7}{{10}} - \frac{3}{{11}} = \frac{{77}}{{110}} - \frac{{30}}{{110}}\\ = \frac{{47}}{{110}}\end{array}\)

\(\begin{array}{l}\frac{5}{6} - \frac{3}{{14}} = \frac{{35}}{{42}} - \frac{9}{{42}}\\ = \frac{{26}}{{42}} = \frac{{13}}{{21}}\end{array}\)

\(\begin{array}{l}\frac{7}{{12}} - \frac{2}{{11}} = \frac{{77}}{{132}} - \frac{{24}}{{132}}\\ = \frac{{53}}{{132}}\end{array}\)

\(\begin{array}{l}\frac{5}{9} - \frac{1}{8} = \frac{{40}}{{72}} - \frac{9}{{72}}\\ = \frac{{31}}{{72}}\end{array}\)

\(\begin{array}{l}\frac{6}{7} - \frac{1}{{10}} = \frac{{60}}{{70}} - \frac{7}{{70}}\\ = \frac{{53}}{{70}}\end{array}\)

\(\begin{array}{l}\frac{5}{{11}} - \frac{1}{8} = \frac{{40}}{{88}} - \frac{{11}}{{88}}\\ = \frac{{29}}{{88}}\end{array}\)

\(\begin{array}{l}\frac{7}{{10}} - \frac{2}{9} = \frac{{63}}{{90}} - \frac{{20}}{{90}}\\ = \frac{{43}}{{90}}\end{array}\)

\(\begin{array}{l}\frac{5}{{12}} - \frac{2}{{13}} = \frac{{65}}{{156}} - \frac{{24}}{{156}}\\ = \frac{{41}}{{156}}\end{array}\)

\(\begin{array}{l}\frac{4}{{11}} - \frac{1}{7} = \frac{{28}}{{77}} - \frac{{11}}{{77}}\\ = \frac{{17}}{{77}}\end{array}\)

\(\begin{array}{l}\frac{7}{9} - \frac{2}{5} = \frac{{35}}{{45}} - \frac{{18}}{{45}}\\ = \frac{{17}}{{45}}\end{array}\)

\(\begin{array}{l}\frac{5}{8} - \frac{3}{{11}} = \frac{{55}}{{88}} - \frac{{24}}{{88}}\\ = \frac{{31}}{{88}}\end{array}\)

\(\begin{array}{l}\frac{6}{{13}} - \frac{1}{5} = \frac{{30}}{{65}} - \frac{{13}}{{65}}\\ = \frac{{17}}{{65}}\end{array}\)

\(\begin{array}{l}\frac{7}{{11}} - \frac{3}{8} = \frac{{56}}{{88}} - \frac{{33}}{{88}}\\ = \frac{{23}}{{88}}\end{array}\)

\(\begin{array}{l}\frac{4}{5} - \frac{1}{6} = \frac{{24}}{{30}} - \frac{5}{{30}}\\ = \frac{{19}}{{30}}\end{array}\)

\(\begin{array}{l}\frac{7}{{12}} - \frac{3}{8} = \frac{{14}}{{24}} - \frac{9}{{24}}\\ = \frac{5}{{24}}\end{array}\)

\(\begin{array}{l}\frac{3}{4} - \frac{2}{{11}} = \frac{{33}}{{44}} - \frac{8}{{44}}\\ = \frac{{25}}{{44}}\end{array}\)

\(\begin{array}{l}\frac{5}{7} - \frac{1}{4} = \frac{{20}}{{28}} - \frac{7}{{28}}\\ = \frac{{13}}{{28}}\end{array}\)

\(\begin{array}{l}\frac{6}{{11}} - \frac{2}{{13}} = \frac{{66}}{{143}} - \frac{{22}}{{143}}\\ = \frac{{44}}{{143}}\end{array}\)

\[\begin{array}{l}\frac{4}{5} - \frac{3}{{13}} = \frac{{52}}{{65}} - \frac{{15}}{{65}}\\ = \frac{{37}}{{65}}\end{array}\]

\(\begin{array}{l}\frac{5}{7} - \frac{2}{{11}} = \frac{{55}}{{77}} - \frac{{14}}{{77}}\\ = \frac{{41}}{{77}}\end{array}\)

\(\begin{array}{l}\frac{7}{{10}} - \frac{1}{6} = \frac{{21}}{{30}} - \frac{5}{{30}}\\ = \frac{{16}}{{30}} = \frac{8}{{15}}\end{array}\)