Q: What is the solution?
Solve -100*r + 56 = -467 - 1977 for r.

A: 25

Q: What is the solution?
Solve -104*q - 505 = 1679 for q.

A: -21

Q: What is the solution?
Solve -10 = -17*v + 15*v for v.

A:
5