How do I get some money?

Hint 1 of 9:

This is a pretty convoluted puzzle.  Let's sort things out a bit, okay?

Hint 2 of 9:

You have a -$75 check, and you need to find a way to make it a +$75 check.

Hint 3 of 9:

Remember that a withdrawal is an opposite of a deposit.

Hint 4 of 9:

Here's the solution:

Hint 5 of 9:

Go to the withdrawal window, and get a slip.