\(\frac{1}{3} + \frac{2}{7} = \)..

\(\begin{array}{l}\frac{1}{3} + \frac{2}{7} = \frac{7}{{21}} + \frac{6}{{21}}\\ = \frac{{13}}{{21}}\end{array}\)

\(\begin{array}{l}\frac{3}{5} + \frac{1}{{11}} = \frac{{33}}{{55}} + \frac{5}{{55}}\\ = \frac{{38}}{{55}}\end{array}\)

\(\begin{array}{l}\frac{2}{9} + \frac{1}{4} = \frac{8}{{36}} + \frac{9}{{36}}\\ = \frac{{17}}{{36}}\end{array}\)

\[\begin{array}{l}\frac{4}{7} + \frac{3}{8} = \frac{{32}}{{36}} + \frac{{21}}{{36}}\\ = \frac{{53}}{{36}}\end{array}\]

\(\begin{array}{l}\frac{1}{{10}} + \frac{2}{3} = \frac{3}{{30}} + \frac{{20}}{{30}}\\ = \frac{{23}}{{30}}\end{array}\)

\(\begin{array}{l}\frac{5}{6} + \frac{1}{{13}} = \frac{{65}}{{78}} + \frac{6}{{78}}\\ = \frac{{71}}{{78}}\end{array}\)

\(\begin{array}{l}\frac{2}{5} + \frac{3}{{17}} = \frac{{34}}{{85}} + \frac{{15}}{{85}}\\ = \frac{{49}}{{85}}\end{array}\)

\(\begin{array}{l}\frac{1}{{12}} + \frac{4}{5} = \frac{5}{{60}} + \frac{{48}}{{60}}\\ = \frac{{53}}{{60}}\end{array}\)

\(\begin{array}{l}\frac{3}{{11}} + \frac{2}{9} = \frac{{27}}{{99}} + \frac{{22}}{{99}}\\ = \frac{{49}}{{99}}\end{array}\)

\(\begin{array}{l}\frac{1}{4} + \frac{5}{7} = \frac{7}{{28}} + \frac{{20}}{{28}}\\ = \frac{{27}}{{28}}\end{array}\)

\(\begin{array}{l}\frac{2}{{13}} + \frac{1}{6} = \frac{{12}}{{78}} + \frac{{13}}{{78}}\\ = \frac{{25}}{{78}}\end{array}\)

\(\begin{array}{l}\frac{4}{9} + \frac{1}{5} = \frac{{20}}{{45}} + \frac{9}{{45}}\\ = \frac{{29}}{{45}}\end{array}\)

\(\begin{array}{l}\frac{3}{{10}} + \frac{2}{{11}} = \frac{{33}}{{110}} + \frac{{20}}{{110}}\\ = \frac{{53}}{{110}}\end{array}\)

\(\begin{array}{l}\frac{1}{7} + \frac{3}{4} = \frac{4}{{28}} + \frac{{21}}{{28}}\\ = \frac{{25}}{{28}}\end{array}\)

\[\begin{array}{l}\frac{5}{8} + \frac{2}{3} = \frac{{15}}{{24}} + \frac{{16}}{{24}}\\ = \frac{{31}}{{12}}\end{array}\]

\(\begin{array}{l}\frac{1}{9} + \frac{4}{{11}} = \frac{{11}}{{99}} + \frac{{36}}{{99}}\\ = \frac{{47}}{{99}}\end{array}\)

\(\begin{array}{l}\frac{2}{5} + \frac{1}{{12}} = \frac{{24}}{{60}} + \frac{5}{{60}}\\ = \frac{{29}}{{60}}\end{array}\)

\[\begin{array}{l}\frac{3}{7} + \frac{1}{{10}} = \frac{{30}}{{70}} + \frac{7}{{70}}\\ = \frac{{37}}{{70}}\end{array}\]

\(\begin{array}{l}\frac{4}{{13}} + \frac{2}{5} = \frac{{20}}{{65}} + \frac{{26}}{{65}}\\ = \frac{{46}}{{65}}\end{array}\)

\(\begin{array}{l}\frac{1}{6} + \frac{3}{8} = \frac{4}{{24}} + \frac{9}{{24}}\\ = \frac{{13}}{{24}}\end{array}\)

\(\begin{array}{l}\frac{2}{3} + \frac{1}{{14}} = \frac{{28}}{{42}} + \frac{3}{{42}}\\ = \frac{{31}}{{42}}\end{array}\)

\(\begin{array}{l}\frac{5}{9} + \frac{2}{7} = \frac{{35}}{{63}} + \frac{{18}}{{63}}\\ = \frac{{53}}{{63}}\end{array}\)

\(\begin{array}{l}\frac{1}{5} + \frac{3}{{13}} = \frac{{13}}{{65}} + \frac{{15}}{{65}}\\ = \frac{{28}}{{65}}\end{array}\)

\(\begin{array}{l}\frac{4}{{11}} + \frac{1}{3} = \frac{{12}}{{33}} + \frac{{11}}{{33}}\\ = \frac{{23}}{{33}}\end{array}\)

\(\begin{array}{l}\frac{2}{7} + \frac{3}{5} = \frac{{10}}{{35}} + \frac{{21}}{{35}}\\ = \frac{{31}}{{35}}\end{array}\)

\(\begin{array}{l}\frac{1}{8} + \frac{2}{9} = \frac{9}{{72}} + \frac{{16}}{{72}}\\ = \frac{{25}}{{72}}\end{array}\)

\(\begin{array}{l}\frac{3}{4} + \frac{1}{{13}} = \frac{{39}}{{52}} + \frac{4}{{52}}\\ = \frac{{43}}{{52}}\end{array}\)

\(\begin{array}{l}\frac{5}{{12}} + \frac{2}{5} = \frac{{25}}{{60}} + \frac{{24}}{{60}}\\ = \frac{{49}}{{60}}\end{array}\)

\(\begin{array}{l}\frac{1}{{11}} + \frac{3}{7} = \frac{7}{{77}} + \frac{{33}}{{77}}\\ = \frac{{40}}{{77}}\end{array}\)

\(\begin{array}{l}\frac{2}{3} + \frac{4}{9} = \frac{6}{9} + \frac{4}{9}\\ = \frac{{10}}{9}\end{array}\)

\(\begin{array}{l}\frac{1}{5} + \frac{2}{{19}} = \frac{{19}}{{95}} + \frac{{10}}{{95}}\\ = \frac{{29}}{{95}}\end{array}\)

\(\begin{array}{l}\frac{3}{8} + \frac{1}{7} = \frac{{21}}{{56}} + \frac{8}{{56}}\\ = \frac{{29}}{{56}}\end{array}\)

\(\begin{array}{l}\frac{4}{5} + \frac{1}{9} = \frac{{36}}{{45}} + \frac{5}{{45}}\\ = \frac{{41}}{{45}}\end{array}\)

\(\begin{array}{l}\frac{2}{{11}} + \frac{3}{{10}} = \frac{{20}}{{110}} + \frac{{33}}{{110}}\\ = \frac{{53}}{{110}}\end{array}\)

\(\begin{array}{l}\frac{1}{4} + \frac{2}{{13}} = \frac{{13}}{{52}} + \frac{8}{{52}}\\ = \frac{{21}}{{52}}\end{array}\)

\(\begin{array}{l}\frac{5}{7} + \frac{3}{{11}} = \frac{{55}}{{77}} + \frac{{21}}{{77}}\\ = \frac{{76}}{{77}}\end{array}\)

\[\begin{array}{l}\frac{2}{9} + \frac{1}{8} = \frac{{16}}{{72}} + \frac{9}{{72}}\\ = \frac{{25}}{{72}}\end{array}\]

\(\begin{array}{l}\frac{3}{5} + \frac{1}{7} = \frac{{21}}{{35}} + \frac{5}{{35}}\\ = \frac{{26}}{{35}}\end{array}\)

\(\begin{array}{l}\frac{4}{{13}} + \frac{1}{3} = \frac{{12}}{{39}} + \frac{{13}}{{39}}\\ = \frac{{25}}{{39}}\end{array}\)

\(\begin{array}{l}\frac{1}{6} + \frac{2}{5} = \frac{5}{{30}} + \frac{{12}}{{30}}\\ = \frac{{17}}{{30}}\end{array}\)