Q: Solve:
Solve 7*h - 9*h = -4 for h.

A: 2

Q: Solve:
Solve -969*d = 2231*d + 567*d + 94175 for d.

A: -25

Q: Solve:
Solve 225*v - 423 = 178*v + 94 for v.

A:
11