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@kc_tax_lady wrote:

Line 9 minus Line 3 is not Zero.

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You have that reversed.  It is line 3 minus line 9.  Does that solve it?

Yes, that is what I meant. Sorry for the lack of editing. Still shouldn't be zero. 

Could you give an example of a line 3 and a line 9?

Is line 3 bigger than line 9? 

If line 3 is smaller than line 9, you will get a negative number, so you would enter -0-, just like it says to do. 

We all have those days when ....