Question

Daca 12+3b/18+2a=0,(6),atunci a/b=

Answer 1

$\frac{12+3b}{18+2a} = \frac{2}{3}$
$\frac{3(4+b)}{2(9+a)} = \frac{2}{3}$
$4(9+a)=9(4+b)$
$36+4a=36+9b$
$4a=9b$
$\frac{a}{b} = \frac{9}{4}$