QUESTION: Math problem: Solve 289*s + 898*s - 17805 = 0 for s.
ANS: 15
QUESTION: Math problem: Solve 0 = 31*n + 30 - 216 for n.
ANS: 6
QUESTION: Math problem: Solve -1919*d - 7300*d + 138*d = 228*d - 195489 for d.
ANS: 21
QUESTION: Math problem: Solve 161*f + 2 = 160*f for f.
ANS:
-2