Write down the solution for this math problem: Solve -x + 139 = 82 for x.
answer: 57

Write down the solution for this math problem: Solve 132*w - 324*w - 392 = 184 for w.
answer: -3

Write down the solution for this math problem: Solve 7073*c - 1455*c - 56920 = -364*c + 62720 for c.
answer: 20

Write down the solution for this math problem: Solve 2*o + 2 = o for o.
answer:
-2