Answer: 62
from that pic, we could know that angle C = 180 - 116 = 64
and for the angle A:
(2x + 4) + (3x - 13) + 64 = 180
5x + 55 = 180
5x = 125
x = 25
Angle A = 3x - 13 = 3(25) - 13 = 62
So the answer is 62.
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