Question:
Solve -15*s - 17 + 2 = 0 for s..

Answer:
-1

Question:
Solve 178*i = 423*i - 7105 for i..

Answer:
29

Question:
Solve 0 = -175*l + 98*l + 85 - 316 for l..

Answer:
-3

Question:
Solve 409 = -57*n + 124 for n..

Answer:
-5