Question:
Solve -22 = 52*f - 126 for f..

Answer:
2

Question:
Solve 293*t + 49*t - 4104 = 41*t - 22164 for t..

Answer:
-60

Question:
Solve 0 = 3*b - 8*b - 20 for b..

Answer:
-4

Question:
Solve 42*l - 21 - 63 = 0 for l..

Answer:
2