QUESTION: Math problem: Solve 19*n = 389 - 313 for n.
ANS: 4
QUESTION: Math problem: Solve 643*q - 645*q = 0 for q.
ANS: 0
QUESTION: Math problem: Solve 0 = -10*g - 7 - 23 for g.
ANS: -3
QUESTION: Math problem: Solve 7*q - q - 12 = 0 for q.
ANS:
2