Q: Solve:
Solve -657*z - 17791 = 1612*z + 883*z + 86225 for z.

A: -33

Q: Solve:
Solve -54 = 61*r - 2029 + 279 - 866 for r.

A: 42

Q: Solve:
Solve -521*n - 383 + 904 = 0 for n.

A:
1