QUESTION: Math problem: Solve -2*v - 21 + 19 = 0 for v.
ANS: -1
QUESTION: Math problem: Solve -504*p - 180 = -484*p for p.
ANS: -9
QUESTION: Math problem: Solve 544284 = 7328*l + 9340 for l.
ANS: 73
QUESTION: Math problem: Solve -7*r + 4*r = -12 for r.
ANS:
4