"Frank Pytel" wrote in message
...

=IF(OR(A30,B30),A3-B3,"")

That won't subtract from Column C
--
Regards,

Sandy
In Perth, the ancient capital of Scotland
and the crowning place of kings


Replace @mailinator.com with @tiscali.co.uk


"Frank Pytel" wrote in message
...
ChrisP;

Sandy's is a little involved, but is certainly one way of doint things.
Try
this instead

=IF(OR(A30,B30),A3-B3,"")

If you don't mind having a 0 in column C then just enter;

=a3-b3

God Bless

Frank Pytel

"ChrisP" wrote:

I wish to create a form to track receipts to and issues from a store.
Very simply like this
Column A Column B Column C
Receipts Add Issues Subtract Stock Remaining

Not being very conversant with excel could any body suggest a formula
that
will add in column C a number entered in column A,
and subtract in column C a number is entered in column B.
Your help is appreciated.