Question:
Solve 0 = -132*s - 2322 + 210 for s..

Answer:
-16

Question:
Solve 286*f = 295*f - 81 for f..

Answer:
9

Question:
Solve 0 = -1242*k - 409*k + 306*k - 30629 - 11066 for k..

Answer:
-31

Question:
Solve -65 = 33*j - 20*j for j..

Answer:
-5