Answer:
23°
Explanation:
Angles (2x + 14)° and (x + 7)° are complementary angles.
If two angles are complementary, then they add up to 90°.
Therefore we have the equation:
(2x + 14) + (x + 7) = 90 combine like terms
(2x + x) + (14 + 7) = 90
3x + 21 = 90 subtract 21 from both sides
3x = 69 divide both sides by 3
x = 23