Question: What is the solution?

Solve 61*l + 481 = 19*l + 5*l for l.

Answer: -13

Question: What is the solution?

Solve 0 = -72*s + 64*s + 56 for s.

Answer: 7

Question: What is the solution?

Solve -6490*p + 6491*p = -7 for p.

Answer: -7

Question: What is the solution?

Solve 686*o + 36945 = -1124*o + 68950 + 123655 for o.

Answer:
86