Find the measure of each angle: Complementary angles with measures (5x) ° and (4x-18) °.

Complentary angles add to 90 degrees

so

5x+4x-18=90

9x-18=90

add 18 both sides

9x=108

divide both sides by 9

x=12

5x is one angle

5x=5 (12) = 60 degrees

the other one is 4x-18

4x-18=4 (12) - 18=48-18=30

the angles are 60 degrees and 30 degrees

and x=12 degree