Q: What is the solution?
Solve -20833*i + 37 = -20793*i - 22 - 21 for i.

A: 2

Q: What is the solution?
Solve 1602*r + 9578 = -67318 for r.

A: -48

Q: What is the solution?
Solve 4*d + 46 - 42 = 0 for d.

A:
-1