Answer: x = 5
Explanation:
(3x + 22) and (3x + 128) are supplementary angles, which means that they add up to 180, so we can write our equation.
(3x + 22) + (3x + 128) = 180
3x + 22 + 3x + 128 = 180
6x + 150 = 180
6x = 30
x = 5
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