Question

Which equation would you use to find the value of x?

Answer 1

C

Explanation:

alt. interior angles are congruent, so don't worry about y

also, because of alt. int. angles, we know that (4x+12)+8x=180

we can solve it by grouping like terms to get x=14

Answer 2

The answer is C. (4x+12)+8x=180