Question

.. If (4x + 7) and (5x – 7)° are a pair of complementary angles, find the angles.​

Answer 1

Answer:

4x +7+5x-7 =90 ( complementary angle)

4x+5x+7-7 =90

9x+0=90

9x=90

x=90÷9

x=10

Answer 2

Answer: x=10
Hope this helps :)