Write down the solution for this math problem: Solve -28 = 9*s + s - 3*s for s.
answer: -4

Write down the solution for this math problem: Solve 3*c + 39 - 226 + 106 = 0 for c.
answer: 27

Write down the solution for this math problem: Solve -57*y - 81*y + 2236 = -95*y for y.
answer: 52

Write down the solution for this math problem: Solve 0 = 42*o + 154 - 28 for o.
answer:
-3