-4.92y-(0.08y + 5.12)=-0.88-y

-4.92y-(0.08y+5,12) = -0.88-y
-4.92y-0.08y-5.12 = -0.88-y
-5y+y = -0.88 + 5.12
-4y = 4.24
y = 4.24 : (-4)
y = -1.06
Ответ: -1,06