Q: What is the solution?
Solve 1000*r + 4639 - 23589 - 9913 = 5137 for r.

A: 34

Q: What is the solution?
Solve 283*b - 320 = 347*b for b.

A: -5

Q: What is the solution?
Solve 249430*d - 110 - 130 = 249550*d for d.

A:
-2