QUESTION: Math problem: Solve -r = 4*r for r.
ANS: 0
QUESTION: Math problem: Solve -10*w + 5 = -11*w for w.
ANS: -5
QUESTION: Math problem: Solve 0 = -0*r - 3*r - 3 for r.
ANS: -1
QUESTION: Math problem: Solve 6081*k + 220 + 2335 = 6008*k for k.
ANS:
-35