Question

Solve for x.
X + 9
2x 111
x = [?]

Answer 1

120

Explanation:

Angle x + 9 and 2x - 111 are adjacent angles.

Adjacent angles are equal.

2x - 111 = x + 9

2x - x = 9 + 111

x = 120

Answer 2

2x-111=x+9[corresponding angle]

2x-x=111+9

x=120