Just enter negative numbers in the columns when they are used.

Say that:
A2 Mon = 10
B2 Tues = -1
C2 Wed = -1
D2 Thurs = 3
E2 Fri = -1
F2 etc...

And your formula is:
=SUM(A2:AE2)
For the entire month.

--

HTH,

RD
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Please keep all correspondence within the Group, so all may benefit!
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"k1ngy" wrote in message
...
I have a worksheet that has balances for delivery and usage. they are all on
one line and a want a monthly use at the end. so 10 delivered mon 1 used
tues
1 wed 3 del thurs 1 used friday. Each day being a different column. how
would
my sum look please?