For the given question above, the full question must have read as: MO bisects m<LMN,<LMO =6x-20 and <NMO 2x+36. Solve for x and find m<LMN. The diagram is not to scale.
If MO bisect the angles, then the 2 resulting angles are equal in size
so you will have: 6x - 20 = 2x + 36