QUESTION: Math problem: Solve -13788*a + 13642*a - 144 = 14018 for a.
ANS: -97
QUESTION: Math problem: Solve 0 = 105*x - 844 + 319 for x.
ANS: 5
QUESTION: Math problem: Solve 0 = 65*r - 237 - 218 for r.
ANS: 7
QUESTION: Math problem: Solve 31452*r - 3737497 = 4171*r for r.
ANS:
137