Question: What is the solution?

Solve 8*k + 102 = 13*k - 7*k for k.

Answer: -51

Question: What is the solution?

Solve 1155*v - 121564 = -76519 for v.

Answer: 39

Question: What is the solution?

Solve -262*r - 4322 + 7196 = -8654 for r.

Answer: 44

Question: What is the solution?

Solve 0 = 2*o - 89 + 103 for o.

Answer:
-7