QUESTION: Math problem: Solve -f + 8*f = 0 for f.
ANS: 0
QUESTION: Math problem: Solve -3199*a - 500670 = -284*a - 180020 for a.
ANS: -110
QUESTION: Math problem: Solve 7638*a - 7654*a = -16 for a.
ANS: 1
QUESTION: Math problem: Solve 167*j - 1596 = -141*j + 251*j for j.
ANS:
28