Question: What is the solution?

Solve 40 = m + 42 for m.

Answer: -2

Question: What is the solution?

Solve 654*s + 4065 + 9015 = 0 for s.

Answer: -20

Question: What is the solution?

Solve 48*z = 4240 - 5296 for z.

Answer: -22

Question: What is the solution?

Solve -530*h = -71*h - 12684 - 4996 - 4352 for h.

Answer:
48