QUESTION: Math problem: Solve 851*k = 869*k + 180 for k.
ANS: -10
QUESTION: Math problem: Solve 3887*z - 1209600 = -10308*z + 844*z - 3449*z for z.
ANS: 72
QUESTION: Math problem: Solve 1264 = -42*f + 214 for f.
ANS: -25
QUESTION: Math problem: Solve 54413 - 27205 + 40606 = 827*v for v.
ANS:
82