Your screen shot does not show row/column headings so I could not tell which column is G. I made an educated guess.
Your problem is a lot more complicated because you are not looking for one-to-one matches. You are looking for a set of multiple cells with numbers that add up to a negative number in another cell. I'm not sure that can be done with formulas.
I'm not sure it can be done at all. How would you even do this on paper? You are going to get false matches. Suppose to you are trying to see if a series of payments completely pays of an amount owed. Let's the amount owed is ($100.00). You might have payments of $80, $20, $50, $40, $50, $60, and $40. There are several combinations that will give you $100 but you can't tell which combination is the one that matches that amount owed.