5(3-2y) - 4(9-y) = 3(y+5)

15 - 10y - 36 + 4y = 3y + 15

-10y + 4y - 21 = 3y + 15

-6y - 21 = 3y + 15

-6y - 3y = 15 + 21

-9y = 36

y = -4

So, the solution to the equation is y = -4.