Question

How do i solve the equation?

Answer 1

Answer: 7x=63 and 12x+9= 117

Explanation:

add those two equations and set it to 180 degree

7x+12x+9=180

19x=171

x= 9

7x = 7 (9) = 63

12x+9 = 12 (9)+9 = 117