You can put this solution on YOUR website! If Angle A And B Are Supplementary
A + B = 180
And the measure of Angle B Is 5 Less Than 4 Times Angle A ,
B = 4A - 5
Find Angle A
Replace B with (4A-5) in the 1st equation
A + (4A-5) = 180
5A = 180 + 5
5A = 185
A = 185/5
A = 37 degrees