Question

Помогите решить уравнение 7-y/6=5/9

Answer 1

$\frac{7-y}{6}= \frac{5}{9} \\9*(7-y)=6*5 \\63-9y=30 \\-9y=30-63\\y= \frac{-33}{-9} \\ y=3 \frac{2}{3}$