QUESTION: Math problem: Solve -66*c + 175 = -91*c for c.
ANS: -7
QUESTION: Math problem: Solve -506*a = -283*a - 334*a + 1998 for a.
ANS: 18
QUESTION: Math problem: Solve -101*o + 5962 = 212*o + 328 for o.
ANS: 18
QUESTION: Math problem: Solve -15 = 22*f - 7*f for f.
ANS:
-1