Answer:
Explanation:
Assuming the big angle is a right angle and you're asking to solve for x?:
The 2 angles are complementary and add up to 90.
(3x + 12) + (2x - 7) = 90
5x + 5 = 90
5x = 85
x = 85/5 = 17
9.5m questions
12.2m answers