QUESTION: Math problem: Solve -25*t + 45 - 231 = 139 for t.
ANS: -13
QUESTION: Math problem: Solve 1751*y + 35208 - 127356 = -1646*y + 1203*y for y.
ANS: 42
QUESTION: Math problem: Solve 195 = 220*f - 24 - 1 for f.
ANS: 1
QUESTION: Math problem: Solve 18*r + 444 = -28*r + 42*r for r.
ANS:
-111