Q: What is the solution?
Solve 0 = 7*b - 4*b + 15 for b.

A: -5

Q: What is the solution?
Solve 50*i + 47*i = 97 for i.

A: 1

Q: What is the solution?
Solve -30*c - 5005 + 4765 = 0 for c.

A:
-8