Question

find an angle which is 5 degree more than four times its supplement

Answer 1

Let the first angle be x°,
then the other angle = 4x + 5
=> x + 4x + 5 = 180 [supplementary angles]
=>5x + 5 = 180
=>5x = 180 - 5
=>x = 175 / 5 
x = 35°
then the angle = 4*35 + 5 = 145°
∴the angle is 145°

Answer 2

let the angle be = x°
supplement  = 180 -  x°

x° = (180 - x°) * 4  + 5°

5 x° = 725

x = 145°