Write down the solution for this math problem: Solve -756 = -5*x - 771 for x.
answer: -3

Write down the solution for this math problem: Solve 0 = 31*w - 487 + 332 for w.
answer: 5

Write down the solution for this math problem: Solve -5*s + 6*s - 5 = 0 for s.
answer: 5

Write down the solution for this math problem: Solve 0 = -10*s - 9 - 1 for s.
answer:
-1