QUESTION: Math problem: Solve -179 = -40*x + 181 for x.
ANS: 9
QUESTION: Math problem: Solve 0 = -648*c + 641*c + 112 for c.
ANS: 16
QUESTION: Math problem: Solve 1572*r = 27619 + 13253 for r.
ANS: 26
QUESTION: Math problem: Solve -12639*s + 13114*s + 31825 = 0 for s.
ANS:
-67