Question: What is the solution?

Solve 1086*o + 22243 = -12509 for o.

Answer: -32

Question: What is the solution?

Solve 147 = 53*r + 412 for r.

Answer: -5

Question: What is the solution?

Solve -17*d = -52 - 16 for d.

Answer: 4

Question: What is the solution?

Solve -39*x - 242 = 70 for x.

Answer:
-8