8y-3(2y-3)=7y-2(5y+8)

8y-6y-9=7y-10y-16

8y-6y-9-7y+10y+16=0

-11y=-7

y=7\11

8y-3(2y-3)=7y-2(5y+8)

8y-6y+9=7y-10y-16

8y-6y-7y+10y = -16-9

5y=-25

y = -25 : 5

у = -5

Ответ: -5