A Brianna has saved $600 to buy a new
TV. The TV she wants costs $1,800
and she saves $20 a week. Write an
equation that represents the how the
money she makes and has saved can
combine to the cost of the TV.

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

the answer is 24

step-by-step explanation:

step-by-step explanation:

the answer is 89 d

i took the test