Question 528584
Two angles are supplementary.
x + y = 180 degrees
.
x = 4y
.
Substitute
.
4y + y = 180
5y = 180
y = 36
.
4y = 4*36 = 144
.
Check
36+144 = 180
.
Answer:  The two angles are 36 and 144 degrees.