Answer:
∠ KLJ = 108° , ∠ JLM = 72°
Explanation:
Since the angles are a linear pair they sum to 180° , then
6x + 12 + 4x + 8 = 180
10x + 20 = 180 ( subtract 20 from both sides )
10x = 160 ( divide both sides by 10 )
x = 16
Then
∠ KLJ = 6x + 12 = 6(16) + 12 = 96 + 12 = 108°
∠ JLM = 4x + 8 = 4(16) + 8 = 64 + 8 = 72°