QUESTION: Math problem: Solve 8*r - 4*r - 12 = 0 for r.
ANS: 3
QUESTION: Math problem: Solve -32 = 7*j + 80 for j.
ANS: -16
QUESTION: Math problem: Solve -9*i = -14*i - 25 for i.
ANS: -5
QUESTION: Math problem: Solve -7*y - 42 = -14 for y.
ANS:
-4