Answer:
x = 17
Explanation:
Angle A and angle B are complementary.
Therefore,
(2x + 16)° + 40° = 90°
(2x + 16)° = 90° - 40°
(2x + 16)° = 50°
2x + 16 = 50
2x = 50 - 16
2x = 34
x = 34/2
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