Question

Сократите дробь
1) $frac{9ab}{ab-4a^2}$

Answer 1

$1) frac{9ab}{ab-4a^{2} } = frac{a(9b)}{a(b-4a)} = frac{9b}{b-4a}$
$2) frac{7ab}{ab-3a^2} = frac{a(7b)}{a(b-3a)} = frac{7b}{b-3a}$