Question: What is the solution?

Solve 0 = 40*a - 57*a for a.

Answer: 0

Question: What is the solution?

Solve 202238 = 5674*b + 184731 + 292746 + 286487 for b.

Answer: -99

Question: What is the solution?

Solve 55 - 48 = 7*o for o.

Answer: 1

Question: What is the solution?

Solve 1098*y = 3075 - 28329 for y.

Answer:
-23