Two angles are supplementary if their sum is 180 the larger angle measures four degrees more than three times the measure of a smaller angle if x represents the measure of the smaller angle and these two angles are supplementary find the measure of each angle

Let
x> the measure of the smaller angle
y> the measure of the larger angle

we know that
x+y=180> y=180--x > equation 1
y=4+3x> equation 2

we equate equation 1 and equation 2
180-x=4+3x> 3x+x=180-4> 4x=176> x=44°
y=4+3x> y=4+3*44> y=136°

the answer is
the smaller angle is 44° and the larger angle is 136°

What mathematical statement is missing ? ? the answer is b