QUESTION: Math problem: Solve -40 = -39*d - 79 for d.
ANS: -1
QUESTION: Math problem: Solve -76140 = -126941*m + 128351*m for m.
ANS: -54
QUESTION: Math problem: Solve -4 = 43*z - 45*z for z.
ANS: 2
QUESTION: Math problem: Solve 0 = -10*s + 3110 - 3050 for s.
ANS:
6