Question:
Solve 0 = -s + 110 - 109 for s..

Answer:
1

Question:
Solve 1920 = 263*t - 455*t for t..

Answer:
-10

Question:
Solve 2119 = -10*n + 2039 for n..

Answer:
-8

Question:
Solve -7574*c = -7632*c + 232 for c..

Answer:
4