The three angles below are supplementary. Use the Angle Addition Postulate to solve for X.

Question

asked Dec 27, 2022 111k views

2 Answers

Sudhir Sinha · Answer 1 · 2022-12-28T22:27:19+0000

Answer:

x = 19

Explanation:

The 3 angles are supplementary and sum to 180°

Sum the 3 angles and equate to 180

5x + 4 + x - 2 + 3x + 7 = 180 , that is

9x + 9 = 180 ( subtract 9 from both sides )

9x = 171 ( divide both sides by 9 )

x = 19