Question

3/4у-2/4=7/12у реши пример

Answer 1

$frac{3}{4}y- frac{7}{12}y= frac{2}{4}$    
 $frac{3}{4}- frac{7}{12}= frac{9-7}{12}= frac{2}{12}= frac{1}{6}$
$frac{1}{6}y= frac{2}{4}$
$y= frac{2}{4}: frac{1}{6}$
$y=3$