Question

qual numero falta para que as fraçoes sejam equivalentes?
$\frac{15}{45}$ = $\frac{3}{?}$
[] 6
[] 9
[] 3

Answer 1

$\frac{15}{45}=\frac{3}{?}$

$\frac{3}{9}=\frac{3}{?}$

$9=?$

$?=9$