Question

For the following system of equations, what is the x-value of the solution?

-x+2y=6

6y=x+18

Answer 1

x = 0

Explanation:

Multiply the first equation by -3 and add the second equation.

-3(-x +2y) +(6y) = -3(6) +(x +18)

3x -6y +6y = -18 +x +18 . . . . eliminate parentheses

3x = x . . . . . . . . .simplify

2x = 0 . . . . . . . . subtract x

x = 0 . . . . . . . . . .divide by 2