Answer:
∠ A = 25° , ∠ B = 65°
Explanation:
Assuming you require the measure of both angles.
complementary angles sum to 90°
sum the 2 angles and equate to 90
x - 4 + 2x + 7 = 90
3x + 3 = 90 ( subtract 3 from both sides )
3x = 87 ( divide both sides by 3 )
x = 29
Then
∠ A = x - 4 = 29 - 4 = 25°
∠ B = 2x + 7 = 2(29) + 7 = 58 + 7 = 65°