Question: What is the solution?

Solve 80*v + 13 = 67*v for v.

Answer: -1

Question: What is the solution?

Solve -14*h = 4 - 18 for h.

Answer: 1

Question: What is the solution?

Solve -6278*x = -3209*x - 3163*x - 564 for x.

Answer: -6

Question: What is the solution?

Solve -28*z + 14*z + 70 = 0 for z.

Answer:
5