QUESTION: Math problem: Solve -9 - 6 = 3*u for u.
ANS: -5
QUESTION: Math problem: Solve -2288 = 281605*n - 281561*n for n.
ANS: -52
QUESTION: Math problem: Solve 2*r + 7*r - 54 = 0 for r.
ANS: 6
QUESTION: Math problem: Solve -257*r = 1756*r + 1670*r - 85580 - 131717 for r.
ANS:
59