M∠LONm, angle, L, O, N is a straight angle.
m
∠
L
O
M
=
4
x
+
3
0
∘
m∠LOM=4x+30
∘
m, angle, L, O, M, equals, 4, x, plus, 30, degrees
m
∠
M
O
N
=
8
x
+
9
0
∘
m∠MON=8x+90
∘
m, angle, M, O, N, equals, 8, x, plus, 90, degrees
Find
m
∠
M
O
N
m∠MONm, angle, M, O, N: