\(\dfrac{2}{7}+\dfrac{3}{14}\)
\(=\dfrac{4}{14}+\dfrac{3}{14}=\dfrac{7}{14}=\dfrac{1}{2}\)
\(\dfrac{2}{3}+\dfrac{1}{12}\)
\(=\dfrac{8}{12}+\dfrac{1}{12}=\dfrac{9}{12}=\dfrac{3}{4}\)
\(8+\dfrac{7}{4}\)
\(=\dfrac{32}{4}+\dfrac{7}{4}=\dfrac{39}{4}\)
\(\dfrac{6}{5}+4\)
\(=\dfrac{6}{5}+\dfrac{20}{5}=\dfrac{26}{5}\)
\(\dfrac{9}{16}-\dfrac{1}{4}\)
\(\dfrac{9}{14}-\dfrac{4}{16}=\dfrac{5}{16}\)
\(\dfrac{7}{3}-\dfrac{2}{9}=\dfrac{21}{9}-\dfrac{2}{9}=\dfrac{19}{9}\)
\(6-\dfrac{3}{10}=\dfrac{60}{10}-\dfrac{3}{10}=\dfrac{57}{10}\)
\(\dfrac{18}{5}-2\)
\(=\dfrac{18}{5}-\dfrac{10}{5}\)\(=\dfrac{8}{5}\)
\(\dfrac{2}{3}\) x \(\dfrac{4}{9}\)
\(=\dfrac{8}{27}\)
\(\dfrac{7}{10}\) x \(\dfrac{5}{2}\)
\(=\dfrac{35}{20}=\dfrac{7}{4}\)
\(\dfrac{13}{14}\) x \(4\)
\(=\dfrac{26}{7}\)
\(5\) x \(\dfrac{2}{7}=\dfrac{10}{7}\)
\(\dfrac{8}{5}:\dfrac{2}{5}\)
\(=\dfrac{8}{5}\) x \(\dfrac{5}{2}\) \(=\dfrac{40}{10}=4\)
\(\dfrac{6}{21}:\dfrac{3}{4}\)
\(=\dfrac{6}{21}\) x \(\dfrac{4}{3}\) \(=\dfrac{24}{63}=\dfrac{8}{21}\)
\(\dfrac{6}{13}:3\)
\(=\dfrac{6}{13}\) x \(\dfrac{1}{3}=\dfrac{6}{39}=\dfrac{2}{13}\)
\(9:\dfrac{3}{8}\)
\(=9\) x \(\dfrac{8}{3}\) \(=24\)
