Question:
Solve 3 - 11 = -8*o for o..

Answer:
1

Question:
Solve -12*y - 300 = -17*y - 15*y for y..

Answer:
15

Question:
Solve -43*s - 95*s - 1365 = -33*s for s..

Answer:
-13

Question:
Solve 200 = -14*c + 270 for c..

Answer:
5