QUESTION: Math problem: Solve 100 = -13410*u + 13420*u for u.
ANS: 10
QUESTION: Math problem: Solve 28*q + 30 = -26 for q.
ANS: -2
QUESTION: Math problem: Solve 51*u + 1828 = 1981 for u.
ANS: 3
QUESTION: Math problem: Solve 0 = -7*s - 343*s + 4900 for s.
ANS:
14