Q: Solve:
Solve 0 = -14*i - 119 - 21 for i.

A: -10

Q: Solve:
Solve 84*v = 91*v - 23 + 72 for v.

A: -7

Q: Solve:
Solve 623*h - 340 - 1250 = 93*h for h.

A:
3