Answer:
∠ MON = 128°
Step-by-step explanation:
∠ LOM + ∠MON = ∠ LON , substitute values
3x + 43 + 8x + 104 = 180, that is
11x + 147 = 180 ( subtract 147 from both sides )
11x = 33 ( divide both sides by 11 )
x = 3
Thus
∠ MON = 8x + 104 = 8(3) + 104 = 24 + 104 = 128°
