Answer:
15x - 12 + 6x = 19x + 2
21x - 12 = 19x + 2
2x = 14
x = 7
Angle MLN: 6(7) = 42°
Angle LMN: 15(7) - 12 = 105 - 12 = 93°
Angle MNI: 19(7) + 2 = 133 + 2 = 135°
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