Question

2. Tìm phân số \(\dfrac{a}{b}\):

\(\dfrac{5}{9}:\dfrac{a}{b}=\dfrac{2}{3}\)                                                     \(\dfrac{a}{b}-\dfrac{2}{3}=4\)

Answer 1

\(\dfrac{a}{b}=\dfrac{5}{9}:\dfrac{2}{3}\)

\(\dfrac{a}{b}=\dfrac{5}{6}\)

 

\(\dfrac{a}{b}=4+\dfrac{2}{3}\)

\(\dfrac{a}{b}=\dfrac{14}{3}\)

Answer 2

a)\(\dfrac{a}{b}=\dfrac{5}{9}:\dfrac{2}{3}=\dfrac{5}{9}\times\dfrac{3}{2}=\dfrac{5}{6}\)

b)\(\dfrac{a}{b}=4+\dfrac{2}{3}=\dfrac{12}{3}+\dfrac{2}{3}=\dfrac{14}{3}\)