Question

Efetue:
b-a/(a+b)
Deu mt dúvida agora

Answer 1

$b- \frac{a}{a+b} = \frac{(a+b)\cdot b}{a+b}- \frac{a}{a+b}= \frac{ab+b^2}{a+b}- \frac{a}{a+b}= \frac{ab+b^2-a}{a+b}= \frac{b^2+ab-a}{a+b}$