QUESTION: Math problem: Solve -264*r + 245*r + 57 = 0 for r.
ANS: 3
QUESTION: Math problem: Solve 1428*k - 931*k = 8449 for k.
ANS: 17
QUESTION: Math problem: Solve 81 - 93 = 6*q for q.
ANS: -2
QUESTION: Math problem: Solve -403*r + 852*r + 4355 = 384*r for r.
ANS:
-67