Q: Solve:
Solve -15*f + 33*f = -90 for f.

A: -5

Q: Solve:
Solve -3605*a - 229*a = 351*a + 372465 for a.

A: -89

Q: Solve:
Solve -96*k - 324 - 19311 = -332*k - 325*k for k.

A:
35