QUESTION: Math problem: Solve -9*u + 18 = -0 for u.
ANS: 2
QUESTION: Math problem: Solve 11 + 6 - 11 = -2*s for s.
ANS: -3
QUESTION: Math problem: Solve -2*p = 2*p + 4 for p.
ANS: -1
QUESTION: Math problem: Solve -35*l = -36*l for l.
ANS:
0