Q: What is the solution?
Solve -58 = 21*s + 47 for s.

A: -5

Q: What is the solution?
Solve 55785*i = 56060*i - 10450 for i.

A: 38

Q: What is the solution?
Solve 90*h = 156*h - 77*h - 121 for h.

A:
-11