Question

Solve the system of equations
y=2x+54
y=8x

Answer 1

x=9

y=72

Explanation:

since they are equal to each other, write it out as 2x+54=8x. then subtract 2 from both sides.

the answer should be 6x=54, so you divide both by 6. the answer is 9.

so x = 9.

then you plug 9 back into the ORIGINAL problem. so 2(9) + 54.

2 x 9 = 18.

54 + 18 = 72.

so the final answer is (9, 72). x = 9, y = 72.

Answer 2

It would be x=9

Explanation:

8x=2x+54

subtract 2 from both sides

6x=54

divide by 6 on both sides

x=9