Question:
Solve 301*w = 307*w + 6 for w..

Answer:
-1

Question:
Solve -308*f - 397*f - 5610 = -97*f + 31478 for f..

Answer:
-61

Question:
Solve 6832 = 502*w - 2227 + 525 for w..

Answer:
17

Question:
Solve 355 = 21*q + 250 for q..

Answer:
5