Question

Help Review of linear pair vertical and complementary

Answer 1

x = 15

Explanation:

The two angles form a straight line so they add to 180 degrees

3+6x + 5x+12 = 180

Combine like terms

11x+15 = 180

Subtract 15 from each side

11x+15-15 =180-15

11x = 165

Divide by 11

11x/11 =165/11

x =15