Question

Help solve for x !!!

Answer 1

x = 9

Explanation:

9x - 1 and 10 + 10x are same- side interior angles and sum to 180° , so

9x - 1 + 10 + 10x = 180

19x + 9 = 180 ( subtract 9 from both sides )

19x = 171 ( divide both sides by 19 )

x = 9