Question: What is the solution?

Solve 78342*c - 78424*c = -2952 for c.

Answer: 36

Question: What is the solution?

Solve -87*l + 2436 = -2517*l - 6*l for l.

Answer: -1

Question: What is the solution?

Solve -9*h + 65977 - 65905 = 0 for h.

Answer: 8

Question: What is the solution?

Solve -35 - 12 = -5*z - 57 for z.

Answer:
-2