QUESTION: Math problem: Solve 0 = 4*c - 10 - 2 for c.
ANS: 3
QUESTION: Math problem: Solve 0 = 15*o + 16 - 46 for o.
ANS: 2
QUESTION: Math problem: Solve -91*a = 27*a + 236 for a.
ANS: -2
QUESTION: Math problem: Solve 1 = 25*x + 40*x + 1 for x.
ANS:
0