Q: What is the solution?
Solve -638 = -162*b + 496 for b.

A: 7

Q: What is the solution?
Solve -197*b - 247 = 105*b + 2773 for b.

A: -10

Q: What is the solution?
Solve -30232 = 2708*v + 33143 - 17339 for v.

A:
-17