The answer is 3x+5. The work is below
Factors 5x are absolutely correct
Explanation
The ration is 10/7
Divide 55 and 35 by 5 to reduce the fraction of 55/35 and you get 10/7
Those are supplementary,
(x+8) + (3x+2) = 180
4x + 10 = 180
4x = 170
x = 170/4 = 85/2 = 42.5 degrees
x+8 = 50.5 degrees
3x+2 = 129.5 degrees
I think I just answered this question yesterday
