∡NMO = 59°
if MO bisect =>
=> ∡LMN = 2∡LMO =>
=> 5x - 22 = 2(x + 31)
5x - 22 = 2x + 62
5x - 2x = 62 + 22
3x = 84
x = 28°
∡LMO = ∡NMO => ∡NMO = x + 31
=> ∡NMO = 28 + 31 = 59°
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