Find the measure of an angle , if 7 times its complement is 10 less than three times its supplement

Answer 1

let the angle be x
its complement is 90-x
its supplement is 180-x

7(90-x) = 3(180-x) - 10

solve for x

Answer 2

Angle = 20
Complement = 70
Supplement = 160

Answer 3

so much thanks

Answer 4

Must solve the sum in detail