\(a,\dfrac{1}{4}+\dfrac{5}{6}=\dfrac{3+10}{12}=\dfrac{13}{12}.\\ b,\dfrac{2}{9}+\dfrac{1}{6}=\dfrac{4+3}{18}=\dfrac{7}{13}.\)
\(c,\dfrac{1}{6}+\dfrac{3}{8}=\dfrac{4+9}{24}=\dfrac{13}{24}.\\ d,\dfrac{3}{10}+\dfrac{5}{8}=\dfrac{12+25}{40}=\dfrac{37}{40}.\)
\(e,\dfrac{1}{8}+\dfrac{5}{6}=\dfrac{3+20}{24}=\dfrac{23}{24}.\\ g,\dfrac{2}{3}+\dfrac{2}{7}=\dfrac{14+6}{21}=\dfrac{20}{21}.\)
