QUESTION: Math problem: Solve 30 = -46*d + 31*d for d.
ANS: -2
QUESTION: Math problem: Solve 338*v - 412*v - 222 = 0 for v.
ANS: -3
QUESTION: Math problem: Solve 10*n = 35*n - 100 for n.
ANS: 4
QUESTION: Math problem: Solve -59 = 31*l - 21 + 55 for l.
ANS:
-3