QUESTION: Math problem: Solve 0 = 5*t - 496 + 496 for t.
ANS: 0
QUESTION: Math problem: Solve 11*d + 948 = 838 for d.
ANS: -10
QUESTION: Math problem: Solve 0 = -5*r - 12*r - 17 for r.
ANS: -1
QUESTION: Math problem: Solve -31*u = 3 + 90 for u.
ANS:
-3