QUESTION: Math problem: Solve 36*f - 441 + 232 - 475 = 0 for f.
ANS: 19
QUESTION: Math problem: Solve -39*s - 13609 + 16495 = 0 for s.
ANS: 74
QUESTION: Math problem: Solve 51*t = 106*t - 54*t + 1 for t.
ANS: -1
QUESTION: Math problem: Solve 129 + 53 = -41*r - 269 for r.
ANS:
-11