Question

2a/3b =8/9=>b/a ajutor

Answer 1

$\frac{2a}{3b} = \frac{8}{9}$

$\frac{2}{3} \times \frac{a}{b} = \frac{8}{9}$

$\frac{a}{b} = \frac{8}{9} \div \frac{2}{3}$

$\frac{a}{b} = \frac{8}{9} \times \frac{3}{2}$

$\frac{a}{b} = \frac{4}{3} \times \frac{1}{1}$

$\frac{a}{b} = \frac{4}{3} \times 1$

$\frac{a}{b} = \frac{4}{3}$

${ (\frac{a}{b}) }^{ - 1} = \frac{b}{a} = \frac{3}{4}$