Question: What is the solution?

Solve 710573 - 241899 = 5266*y for y.

Answer: 89

Question: What is the solution?

Solve -17*o - 3 = -16*o for o.

Answer: -3

Question: What is the solution?

Solve 2*f - 21 = 9*f for f.

Answer: -3

Question: What is the solution?

Solve 435 - 178 + 415 = 168*s for s.

Answer:
4