QUESTION: Math problem: Solve 4*b + 31*b - 304 = 11 for b.
ANS: 9
QUESTION: Math problem: Solve 231*u = 177*u + 756 for u.
ANS: 14
QUESTION: Math problem: Solve -42 = 63*d - 70*d for d.
ANS: 6
QUESTION: Math problem: Solve -291*w + 10133 + 982 = -6*w for w.
ANS:
39