QUESTION: Math problem: Solve 16*f + 215 = -27*f for f.
ANS: -5
QUESTION: Math problem: Solve -631*z = -629*z - 10 for z.
ANS: 5
QUESTION: Math problem: Solve 304811 = 9675*l - 21736 - 31428 for l.
ANS: 37
QUESTION: Math problem: Solve 39*u + 465 - 114 = 0 for u.
ANS:
-9