QUESTION: Math problem: Solve 139*s = 137*s for s.
ANS: 0
QUESTION: Math problem: Solve -400*i + 325*i = -600 for i.
ANS: 8
QUESTION: Math problem: Solve -247*f + 1067 - 64 = -479 for f.
ANS: 6
QUESTION: Math problem: Solve -55*m + 4*m + 918 = 0 for m.
ANS:
18