Question: What is the solution?

Solve -35*r + 102 = -r for r.

Answer: 3

Question: What is the solution?

Solve -283*v = -287*v for v.

Answer: 0

Question: What is the solution?

Solve -5*k - 7583 = -7538 for k.

Answer: -9

Question: What is the solution?

Solve 13*c + 10 = -16 for c.

Answer:
-2