Q: Solve:
Solve -319*f + 433*f = -239*f - 394*f - 2988 for f.

A: -4

Q: Solve:
Solve 36*x + 1443 = -75*x for x.

A: -13

Q: Solve:
Solve 0 = 2195*y - 2231*y + 468 for y.

A:
13