\(\dfrac{3}{5}:\dfrac{a}{b}=\dfrac{3}{4}\)
\(\dfrac{a}{b}=\dfrac{3}{5}:\dfrac{3}{4}\)
\(\dfrac{a}{b}=\dfrac{4}{5}\)
Vậy a = 4 và b = 5
\(\dfrac{3}{5}:\dfrac{a}{b}=\dfrac{3}{4}\)
\(\dfrac{a}{b}=\dfrac{3}{5}:\dfrac{3}{4}\)
\(\dfrac{a}{b}=\dfrac{3}{5}\times\dfrac{4}{3}\)
\(\dfrac{a}{b}=\dfrac{4}{5}\)