Answer:
x = 17
Step-by-step explanation:
The sum of two interior angles in a triangle is equal to an exterior angle that's supplementary to the third interior angle
7x - 32 + 5x - 27 = 9x - 8 add like terms
12x - 59 = 9x - 8
12x - 9x = 59 - 8
3x = 51 divide both sides by 3
x = 17
measure of angle K 7x - 32 ➡ 7 × 17 - 32 = 87°
measure of angle J 5x - 27 ➡ 5 × 17 - 27 = 58°
measure of angle L 9x - 8 ➡ 9 × 17 - 8 = 145°
