Question

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

Answer 1

Let the angle be 'x' 
Supplementary angle of 'x' is '180-x'
By the problem , 
x=4(180-x)+5
x=720-4x+5
5x=725
x=145
Therefore the angle is 145⁰.

Answer 2

let the supplement of the angle be x.
∴the angle=4x+5.
they r supplements so:
x+(4x+5)=180
5x+5=180
5x=175.
∴x=35
its supplement is 145.
∴the measure of that angle = 145°.

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