Q: What is the solution?
Solve 18*r - 23*r - 25 = 0 for r.

A: -5

Q: What is the solution?
Solve 2*b - 5*b = -9 for b.

A: 3

Q: What is the solution?
Solve -119*b + 51 - 1 = -109*b for b.

A:
5