formula for blank cell

[deane1935]

I have a spreadsheet to keep a running balance. I have a formula
=sum(c2,-a3,+b3). It is copied thru the speadsheet. It works fine
except the last balance is propagated to the end of the sheet. I would
like to be able to check col a and col b and if they are blank, make
col c blank. How can I do this and still keep my running balance when I
enter a debit in col a or a credit in col b? Thanks for any help. Deane

 

[bill k]

IF(AND(A3="",B3=""),"",C2-A3+B3)

should do the trick

 

[deane1935]

Thanks Bill, but unless I am doing something wrong, it doesn't work

 

[Cutter]

For a running balance in Column C do this

Assume you are putting your first formula in C4 and your carry-over o
starting balance is in C3

=IF(AND(A4="",B4=""),"",C3-A4+B4)

NOTE that you do not put negative numbers in your debit column (A)
otherwise you'll be adding the debits instead of subtracting them

 

[deane1935]

Thanks Cutter, the = in front of IF made it work.

 

[Cutter]

You're welcome. And yes, the = is very important. It's what makes it a
formula. Otherwise it's just a text string.