Please help due in 4 hours, I'll give 5 stars, thanks and brainliest. Adding and subtracting polynomials. You don't have to do both if you dont want to just one.

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

2, 2, 2 or -4, 20, 29

step-by-step explanation:

there is two ways you can do it.