Q: What is the solution?
Solve 89*r - 84*r = -10 for r.

A: -2

Q: What is the solution?
Solve 74*j - 224909 = -220173 for j.

A: 64

Q: What is the solution?
Solve -777*d - 985*d + 39690 = -322*d + 30*d for d.

A:
27