Question

if the angles (2x -10) and (x-5) are complementary angles ,find x

Answer 1

Complementary angle =90°

Therefore
2x-10+x-5=90
3x-15=90
3x=90+15
3x=105
x=105/3
x=35

Answer 2

(2x-10)+(x-5)=90 (complementary angles)
3x-15=90
3x=90+15
3x=75
x=75÷3
x=35


(2x-10)=2x35-10=60
(x-5)=35-5=30