QUESTION: Math problem: Solve 7471 + 1204 = -90*l - 387*l + 566 for l.
ANS: -17
QUESTION: Math problem: Solve 254*c - 200*c - 155*c - 1111 = 0 for c.
ANS: -11
QUESTION: Math problem: Solve -5*d + 15*d = 0 for d.
ANS: 0
QUESTION: Math problem: Solve 9712 - 6676 = 46*r for r.
ANS:
66