\(\frac{8}{{17}} - \frac{2}{8} = \)...

\(\begin{array}{l}\frac{8}{{17}} - \frac{2}{8} = \frac{{64}}{{136}} - \frac{{34}}{{136}}\\ = \frac{{30}}{{136}} = \frac{{15}}{{68}}\end{array}\)

\(\begin{array}{l}\frac{5}{{19}} - \frac{1}{4} = \frac{{20}}{{76}} - \frac{{19}}{{76}}\\ = \frac{1}{{76}}\end{array}\)

\(\begin{array}{l}\frac{{10}}{{23}} - \frac{1}{5} = \frac{{50}}{{115}} - \frac{{23}}{{115}}\\ = \frac{{27}}{{115}}\end{array}\)

\[\begin{array}{l}\frac{6}{{25}} - \frac{1}{7} = \frac{{42}}{{175}} - \frac{{25}}{{175}}\\ = \frac{{17}}{{175}}\end{array}\]

\(\begin{array}{l}\frac{8}{{29}} - \frac{3}{8} = \frac{{80}}{{232}} - \frac{{58}}{{232}}\\ = \frac{{22}}{{232}} = \frac{{11}}{{116}}\end{array}\)

\(\begin{array}{l}\frac{7}{{16}} - \frac{2}{9} = \frac{{63}}{{144}} - \frac{{32}}{{144}}\\ = \frac{{31}}{{144}}\end{array}\)

\(\begin{array}{l}\frac{5}{{21}} - \frac{1}{6} = \frac{{10}}{{42}} - \frac{7}{{42}}\\ = \frac{3}{{42}} = \frac{1}{{14}}\end{array}\)

\(\begin{array}{l}\frac{9}{{26}} - \frac{3}{{10}} = \frac{{45}}{{130}} - \frac{{39}}{{130}}\\ = \frac{6}{{130}} = \frac{3}{{65}}\end{array}\)

\(\begin{array}{l}\frac{4}{{15}} - \frac{1}{{22}} = \frac{{88}}{{330}} - \frac{{15}}{{330}}\\ = \frac{{73}}{{330}}\end{array}\)

\(\begin{array}{l}\frac{6}{{27}} - \frac{2}{{12}} = \frac{{24}}{{108}} - \frac{{18}}{{108}}\\ = \frac{6}{{108}} = \frac{1}{{18}}\end{array}\)

\(\begin{array}{l}\frac{8}{{31}} - \frac{3}{7} = \frac{{70}}{{217}} - \frac{{62}}{{217}}\\ = \frac{8}{{217}}\end{array}\)

\(\begin{array}{l}\frac{7}{{20}} - \frac{2}{{17}} = \frac{{119}}{{340}} - \frac{{40}}{{340}}\\ = \frac{{79}}{{340}}\end{array}\)

\(\begin{array}{l}\frac{5}{{18}} - \frac{1}{{11}} = \frac{{55}}{{198}} - \frac{{18}}{{198}}\\ = \frac{{37}}{{198}}\end{array}\)

\(\begin{array}{l}\frac{9}{{28}} - \frac{4}{{15}} = \frac{{135}}{{420}} - \frac{{112}}{{420}}\\ = \frac{{23}}{{420}}\end{array}\)

\[\begin{array}{l}\frac{6}{{19}} - \frac{2}{{13}} = \frac{{114}}{{247}} - \frac{{38}}{{247}}\\ = \frac{{76}}{{247}}\end{array}\]

\(\begin{array}{l}\frac{8}{{25}} - \frac{3}{{16}} = \frac{{128}}{{400}} - \frac{{75}}{{400}}\\ = \frac{{53}}{{400}}\end{array}\)

\[\begin{array}{l}\frac{7}{{22}} - \frac{2}{9} = \frac{{63}}{{198}} - \frac{{44}}{{198}}\\ = \frac{{19}}{{198}}\end{array}\]

\[\begin{array}{l}\frac{5}{{24}} - \frac{1}{{10}} = \frac{{25}}{{120}} - \frac{{12}}{{120}}\\ = \frac{{13}}{{120}}\end{array}\]

\(\begin{array}{l}\frac{9}{{29}} - \frac{4}{{17}} = \frac{{153}}{{493}} - \frac{{116}}{{493}}\\ = \frac{{37}}{{493}}\end{array}\)

\(\begin{array}{l}\frac{6}{{23}} - \frac{2}{{14}} = \frac{{84}}{{322}} - \frac{{46}}{{322}}\\ = \frac{{38}}{{322}} = \frac{{47}}{{161}}\end{array}\)

\(\begin{array}{l}\frac{8}{{27}} - \frac{3}{{11}} = \frac{{88}}{{297}} - \frac{{81}}{{297}}\\ = \frac{7}{{297}}\end{array}\)

\(\begin{array}{l}\frac{7}{{26}} - \frac{2}{{15}} = \frac{{105}}{{390}} - \frac{{52}}{{390}}\\ = \frac{{53}}{{390}}\end{array}\)

\(\begin{array}{l}\frac{5}{{17}} - \frac{1}{8} = \frac{{40}}{{136}} - \frac{{17}}{{136}}\\ = \frac{{23}}{{136}}\end{array}\)

\(\begin{array}{l}\frac{9}{{31}} - \frac{4}{{18}} = \frac{{162}}{{558}} - \frac{{124}}{{558}} = \frac{{38}}{{558}}\\ = \frac{{19}}{{279}}\end{array}\)

\(\begin{array}{l}\frac{6}{{20}} - \frac{2}{{19}} = \frac{{114}}{{380}} - \frac{{40}}{{380}}\\ = \frac{{74}}{{380}} = \frac{{37}}{{190}}\end{array}\)

\(\begin{array}{l}\frac{8}{{29}} - \frac{3}{{14}} = \frac{{112}}{{406}} - \frac{{87}}{{406}}\\ = \frac{{25}}{{406}}\end{array}\)

\(\begin{array}{l}\frac{7}{{24}} - \frac{2}{{13}} = \frac{{91}}{{312}} - \frac{{48}}{{312}}\\ = \frac{{43}}{{312}}\end{array}\)

\(\begin{array}{l}\frac{5}{{22}} - \frac{1}{9} = \frac{{45}}{{198}} - \frac{{22}}{{198}}\\ = \frac{{23}}{{198}}\end{array}\)

\(\begin{array}{l}\frac{9}{{25}} - \frac{4}{{21}} = \frac{{189}}{{525}} - \frac{{100}}{{525}}\\ = \frac{{89}}{{525}}\end{array}\)

\(\begin{array}{l}\frac{6}{{16}} - \frac{2}{7} = \frac{{42}}{{112}} - \frac{{32}}{{112}}\\ = \frac{{10}}{{112}} = \frac{5}{{56}}\end{array}\)

\(\begin{array}{l}\frac{8}{{23}} - \frac{3}{{17}} = \frac{{136}}{{391}} - \frac{{69}}{{391}}\\ = \frac{{67}}{{391}}\end{array}\)

\(\begin{array}{l}\frac{7}{{19}} - \frac{2}{{10}} = \frac{{56}}{{190}} - \frac{{33}}{{190}}\\ = \frac{{23}}{{190}}\end{array}\)

\(\begin{array}{l}\frac{5}{{28}} - \frac{1}{{12}} = \frac{{15}}{{84}} - \frac{7}{{84}}\\ = \frac{8}{{84}} = \frac{2}{{21}}\end{array}\)

\(\begin{array}{l}\frac{9}{{27}} - \frac{4}{{14}} = \frac{{126}}{{378}} - \frac{{108}}{{378}}\\ = \frac{{18}}{{378}} = \frac{1}{{21}}\end{array}\)

\(\begin{array}{l}\frac{6}{{29}} - \frac{2}{{15}} = \frac{{90}}{{435}} - \frac{{58}}{{435}}\\ = \frac{{32}}{{435}}\end{array}\)

\(\begin{array}{l}\frac{8}{{21}} - \frac{3}{{16}} = \frac{{128}}{{336}} - \frac{{63}}{{336}}\\ = \frac{{65}}{{336}}\end{array}\)

\(\begin{array}{l}\frac{7}{{30}} - \frac{2}{{11}} = \frac{{77}}{{330}} - \frac{{60}}{{330}}\\ = \frac{{17}}{{330}}\end{array}\)

\[\begin{array}{l}\frac{5}{{26}} - \frac{1}{{13}} = \frac{5}{{26}} - \frac{2}{{26}}\\ = \frac{3}{{26}}\end{array}\]

\(\begin{array}{l}\frac{9}{{22}} - \frac{4}{{19}} = \frac{{171}}{{418}} - \frac{{88}}{{418}}\\ = \frac{{83}}{{418}}\end{array}\)

\(\begin{array}{l}\frac{6}{{17}} - \frac{2}{9} = \frac{{54}}{{153}} - \frac{{34}}{{153}}\\ = \frac{{20}}{{153}}\end{array}\)