Question

Please please help with parallelogram problem

Answer 1

x = 19

Explanation:

A straight line = 180 degrees

So.........

6x + 3x+ 9 = 180

9x + 9 = 180

- 9 -9 (Subtract both sides by 9)

_____________

9x = 171

x = 19 (Divide both sides by 9)