Question

If an angle is 18 more than its complement then its measure is

Answer 1

let the angle be x => complement is 90-x

given x = 90 - x + 18

=> 2 * x = 108

x = 54

Answer 2

let the first angle be x
another angle is x+18
now x+x+18 is 90
2x+18=90
2x= 72
x=72/2
=36

x=36
x-18= 54