Q: What is the solution?
Solve 0 = -31*w - 30*w - 122 for w.

A: -2

Q: What is the solution?
Solve -3*x + 11*x = -8 for x.

A: -1

Q: What is the solution?
Solve 30*r + r = -78*r + 327 for r.

A:
3