QUESTION: Math problem: Solve -4*f + 16*f - 721 = -91*f for f.
ANS: 7
QUESTION: Math problem: Solve 7*q - 52 = 3*q + 8 for q.
ANS: 15
QUESTION: Math problem: Solve 0 = -607*g + 604*g + 24 for g.
ANS: 8
QUESTION: Math problem: Solve -21*z - 50 = 34 for z.
ANS:
-4