Answer:
118
Step-by-step explanation:
The sum of the angles is 180 degrees
(3x + 13) + (x-8) +x = 180
Combine like terms
5x +5 = 180
Subtract 5 from each side
5x+5-5= 180-5
5x =175
Divide by 5
5x/5 = 175/5
x = 35
We want to find angle A
3x+13
3(35)+13
105+13
118
