\(4+\dfrac{3}{5}=\dfrac{20}{5}+\dfrac{3}{5}=\dfrac{23}{5}\)
\(\dfrac{1}{5}+\dfrac{2}{7}=\dfrac{7}{35}+\dfrac{10}{35}=\dfrac{17}{35}\)
\(\dfrac{4}{7}\times\dfrac{14}{3}=\dfrac{56}{21}=\dfrac{8}{3}\)
\(\dfrac{5}{6}:\dfrac{4}{9}=\dfrac{5}{6}\times\dfrac{9}{4}=\dfrac{15}{8}\)
\(4+\dfrac{3}{5}=\dfrac{20}{5}+\dfrac{3}{5}=\dfrac{23}{5}\)
\(\dfrac{1}{5}+\dfrac{2}{7}=\dfrac{7}{35}+\dfrac{5}{35}=\dfrac{12}{35}\)
\(\dfrac{4}{7}\times\dfrac{14}{3}=\dfrac{56}{21}=\dfrac{8}{3}\)
\(\dfrac{5}{6}:\dfrac{4}{9}=\dfrac{5}{6}\times\dfrac{9}{4}=\dfrac{15}{8}\)