Question: What is the solution?

Solve -897*z = -993*z + 864 for z.

Answer: 9

Question: What is the solution?

Solve 21*o + 30*o = 141 + 522 for o.

Answer: 13

Question: What is the solution?

Solve -4342*s + 1582*s = 104880 for s.

Answer: -38

Question: What is the solution?

Solve -13*h - 38 + 116 = 0 for h.

Answer:
6