Question

Solve for x in the diagram below.

Answer 1

x = 45

Explanation:

The 2 given angles are adjacent snd sum to 180° , then

2x + 45 + x = 180 , that is

3x + 45 = 180 ( subtract 45 from both sides )

3x = 135 ( divide both sides by 3 )

x = 45

Answer 2

x = 45

Explanation:

180 = (2x + 45) + x

135 = 2x + x

135/3 = 3x/3

45 = x