QUESTION: Math problem: Solve 220*a - 153*a = 201 for a.
ANS: 3
QUESTION: Math problem: Solve -150*f + 910*f + 156*f + 49*f = -107115 for f.
ANS: -111
QUESTION: Math problem: Solve 6*u = -43*u + 196 for u.
ANS: 4
QUESTION: Math problem: Solve 10*r = 38*r + 23*r for r.
ANS:
0