QUESTION: Math problem: Solve 0*v = -v + 15*v for v.
ANS: 0
QUESTION: Math problem: Solve 18*k - 22*k + 4 = 0 for k.
ANS: 1
QUESTION: Math problem: Solve -13*d - 2 = 11 for d.
ANS: -1
QUESTION: Math problem: Solve -30*c - 25 - 136 = -41 for c.
ANS:
-4