SOLUTION: The measure of the supplement of an angle is 20 more than thrice the measure of the angle find the measure of each angle

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Question 1192264: The measure of the supplement of an angle is 20 more than thrice the measure of the angle find the measure of each angle
Answer by MathLover1(20849) About Me  (Show Source):
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two angles are said to be supplementary angles if they add up to 180 degrees
A%2BB=+180°
if < A is 20 more than thrice the measure of the <B , than we have
< A=3B%2B20
then
A%2BB=+180°.............substitute A
3B%2B20%2BB=+180°
4B=+180-20°
4B=+160°
B=+40°

then
< A=3%2A40%2B20°
< A=140°