QUESTION: Math problem: Solve 39*c + 54 = 30*c for c.
ANS: -6
QUESTION: Math problem: Solve 56*k - 153 = 73*k for k.
ANS: -9
QUESTION: Math problem: Solve 12*y = -2*y - 42 for y.
ANS: -3
QUESTION: Math problem: Solve -25*n = -39*n - 26*n + 240 for n.
ANS:
6