Q: Solve:
Solve -101736*f + 102963*f = -57669 for f.

A: -47

Q: Solve:
Solve -38934 = -1068*z - 8545 + 4855 for z.

A: 33

Q: Solve:
Solve -45 = 794*r - 785*r for r.

A:
-5