How do I find the measure of problem #13

Answer:
Set the two equations equal to each other if you want me to solve tell me.
So.... 15x+10=16x+3
-15 -15
10=1x+3
-3
7=x
Answer:
Step-by-step explanation:
Set them equal bc they are vertical angles
15x+10=6x+3
-6x. -6x
9x=
I don't know the rest