Q: What is the solution?
Solve -47*r - 6*r + 457 - 139 = 0 for r.

A: 6

Q: What is the solution?
Solve 22 = 35*v + 39 + 333 for v.

A: -10

Q: What is the solution?
Solve -171*b + 52 = -803 for b.

A:
5