QUESTION: Math problem: Solve -240*m = -261*m - 84 for m.
ANS: -4
QUESTION: Math problem: Solve 38*l - 20*l + 180 = 0 for l.
ANS: -10
QUESTION: Math problem: Solve 31174*l - 279 = 31142*l + 137 for l.
ANS: 13
QUESTION: Math problem: Solve 11*c = 10*c + 7 for c.
ANS:
7