Question:
Solve -17*l = -16*l - 3 for l..

Answer:
3

Question:
Solve 0 = 725*s - 178*s + 2192 - 4 for s..

Answer:
-4

Question:
Solve 13 = 4*o + 25 for o..

Answer:
-3

Question:
Solve 329 + 489 = -232*d - 177*d for d..

Answer:
-2