QUESTION: Math problem: Solve 61*y = -563*y + 6864 for y.
ANS: 11
QUESTION: Math problem: Solve -23*c - 50*c = -39*c for c.
ANS: 0
QUESTION: Math problem: Solve 16*f - 13*f = -12 for f.
ANS: -4
QUESTION: Math problem: Solve -8990*u - 9520 = -8514*u for u.
ANS:
-20