Question: What is the solution?

Solve 1842 = 135*o - 723 for o.

Answer: 19

Question: What is the solution?

Solve -4*u + 704 - 688 = 0 for u.

Answer: 4

Question: What is the solution?

Solve 37*s + 29*s = 66 for s.

Answer: 1

Question: What is the solution?

Solve -18047 + 17585 = -21*v for v.

Answer:
22