Please answer this correctly

The first box is 3 since you are distributing from 3 or whatever number is outside of the paranthesis.

The second box is 24 because 3•8 is 24.

i think that you should ask google for the answer to that problem because if we don't know it google does

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