Question

Two angles are supplementary.   One measures 7x - 9 and the other measures 4x + 3.  Find x and the measure of the smaller angle​

Answer 1

Supplementary angles add up to 180°

180=7x-9+4x+3

180=7x+4x-9+3

180=11x-7

180+7=11x

187=11x

11x=187

x=187/11

x=17

Therefore x = 17