Question

Can someone please help me with this fast?

Answer 1

65

Explanation:

first, find x

180=12x-7+16x+19

180=12x+16x-7+19

180+7-19=28x

168=28x

168/28=x

6=x

Now plug in 6 for x

C=12x-7

C=12*6-7

C=72-7

C=65

Answer 2

If C and D are supplementary angles then C is 65 and D is 115.