The value of the angle is 85° and 95°.
The image shows a pair of parallel lines with arrows pointing in opposite directions. The two angles marked 5x+15 and 7x-3 are supplementary angles, meaning that they add up to 180 degrees.
5x+15 + 7x-3 = 180
12x+12 = 180
12x = 168
x = 14
The angle value is
5x+15
= 5 (14) + 15
= 70 + 15
= 85°
7x-3
= 7 (14) - 3
= 98 - 3
= 95°
Question:
Find the measure of given angle?