QUESTION: Math problem: Solve 17*q - 21 + 38 = 0 for q.
ANS: -1
QUESTION: Math problem: Solve -49*u + 322 = -21 for u.
ANS: 7
QUESTION: Math problem: Solve 904*r = 910*r for r.
ANS: 0
QUESTION: Math problem: Solve 3*p - 9 = 6 for p.
ANS:
5