Write down the solution for this math problem: Solve -3*w + 664 - 649 = 0 for w.
answer: 5

Write down the solution for this math problem: Solve 3149*c - 3178*c = 203 for c.
answer: -7

Write down the solution for this math problem: Solve 114472 + 7044 = -1787*w for w.
answer: -68

Write down the solution for this math problem: Solve -15 + 63 = -8*i for i.
answer:
-6