Q: Solve -z = 2779 - 2780 for z.

A: 1

Q: Solve -8207*w + 8122*w = 9435 for w.

A: -111

Q: Solve -158743*f + 8568 = -158911*f for f.

A: -51

Q: Solve 0 = -145*n + 7*n - 2140 - 482 for n.

A:
-19