Please help theres two questions (-2x+8y-11)+(-3y-y+5) (A) what are the like terms in the two Linear expressions

(B) what is the sum of the linear expressions? Express your answer in simplist form. SHOW YOUR WORK. 100 POINTS
(-2x+8y-11)+(-3y-y+5)

a)  "Like terms" are terms whose variables (and their exponents such as the 2 in x²) are the same

8y, -3y and y are all likes terms because the variables are all y

b)

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15