Find the measure of an angle that the difference between the measure of its supplement and nine times its complement is 10 degress

Answer 1

x = the angle

supplement = 180-x

complement = 90-x

10=180-x - 9(90-x)

= 180-x -810+9x = 10

8x = 640

x = 80 degrees

180-80 - 9(90-80)

=100 -90= 10