Question: What is the solution?

Solve 670*c = 4545 + 4165 for c.

Answer: 13

Question: What is the solution?

Solve 21*v + 55*v - 189 = 39 for v.

Answer: 3

Question: What is the solution?

Solve -3583*o = 212758 - 635552 for o.

Answer: 118

Question: What is the solution?

Solve -3679 - 5775 + 838 = 3081*h + 3708 for h.

Answer:
-4