Answer:
If C and D are supplementary angles then C is 65 and D is 115.
65
Step-by-step 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
