Q: Solve:
Solve 2*h = -2*h + 16*h for h.

A: 0

Q: Solve:
Solve -4*y - 16 = -0*y for y.

A: -4

Q: Solve:
Solve 0 = 1309*f - 3066 - 19180 + 3920 for f.

A:
14