QUESTION: Math problem: Solve -3*f + 45 = 54 for f.
ANS: -3
QUESTION: Math problem: Solve 166*c + 19740 = 71*c - 23*c - 164*c for c.
ANS: -70
QUESTION: Math problem: Solve -58*l = 57*l - 108*l - 112 for l.
ANS: 16
QUESTION: Math problem: Solve -562*f - 187 = -579*f for f.
ANS:
11