Question

In the figure below, what is the value of x?

Answer 1

C. 14

Explanation:

Supplementary angles add up to 180°

`8x + 4 + 64 = 180`

`8x + 68 = 180`

`8x = 112`

`x = 14`

Answer 2

C

Explanation:

8x + 4 and 64 are a linear pair and sum to 180° , that is

8x + 4 + 64 = 180

8x + 68 = 180 ( subtract 68 from both sides )

8x = 112 ( divide both sides by 8 )

x = 14