Question:
Solve -133*q + 15*q - 42*q + 6231 + 3689 = 0 for q..

Answer:
62

Question:
Solve 0 = -49*f + 54 + 44 for f..

Answer:
2

Question:
Solve 111 = 40*p - 49 for p..

Answer:
4

Question:
Solve -248 = -7*l - 290 for l..

Answer:
-6