Question: What is the solution?

Solve -54*u + 1540 = -58*u + 39*u for u.

Answer: 44

Question: What is the solution?

Solve 3*f + 217 = -28*f for f.

Answer: -7

Question: What is the solution?

Solve -25*q + 184 = 158 + 101 for q.

Answer: -3

Question: What is the solution?

Solve -13*m + 785 - 761 = -19*m for m.

Answer:
-4