Question: What is the solution?

Solve 257*x = 153947 - 139555 for x.

Answer: 56

Question: What is the solution?

Solve -30*a + 129 = 249 for a.

Answer: -4

Question: What is the solution?

Solve -35*s = 8*s for s.

Answer: 0

Question: What is the solution?

Solve 0 = 32*t - 4970 + 5130 for t.

Answer:
-5