Question: What is the solution?

Solve 31*o - 273 = 192 for o.

Answer: 15

Question: What is the solution?

Solve -338*k + 180 = -320*k for k.

Answer: 10

Question: What is the solution?

Solve 505 - 550 = 15*t for t.

Answer: -3

Question: What is the solution?

Solve 3713*v - 3667*v + 305 = 75 for v.

Answer:
-5