QUESTION: Math problem: Solve 6*r - 21 = 3*r for r.
ANS: 7
QUESTION: Math problem: Solve 0 = -8*p - 282 + 186 for p.
ANS: -12
QUESTION: Math problem: Solve -546*p + 50*p - 17637 + 1269 = 0 for p.
ANS: -33
QUESTION: Math problem: Solve 83*w - 485 = -153 for w.
ANS:
4