Answer:
x = 12 degrees
Explanation:
This isosceles triangle has two equal sides and thus two equal angles. We find the measure of angle 2 by subtracting 76 degrees from 180 degrees, and then dividing the result (104 degrees) by 2: m<2 = 52 degrees.
Then m<2 = 52 degrees = 3x + 16, or
52 degrees - 16 degrees = 3x, or:
36 degrees = 3x
Thus, x = 12 degrees