Question: What is the solution?

Solve -7965*r = -7878*r + 4437 for r.

Answer: -51

Question: What is the solution?

Solve 3*u + 5 = -7 for u.

Answer: -4

Question: What is the solution?

Solve -62*s = 142 - 142 for s.

Answer: 0

Question: What is the solution?

Solve 0 = 229*j - 4791 + 1356 for j.

Answer:
15