QUESTION: Math problem: Solve 142*z - 1008 = -40*z + 14*z for z.
ANS: 6
QUESTION: Math problem: Solve 23*o = 14*o - 27 for o.
ANS: -3
QUESTION: Math problem: Solve 6121 = 51*f + 5305 for f.
ANS: 16
QUESTION: Math problem: Solve 5661 - 4685 = 122*u for u.
ANS:
8