[libreoffice-users] Basic Calc Question

I'm a novice at spreadsheets, and google hasn't turned up an answer.
Probably because I haven't worded the question properly. I am trying to
build a general ledger. I have my running balance in the F column and
transactions in the E column. I am trying to construct a conditional
statement that takes the running balance in F4 and adds it to the -/+
transaction in E5 and put the new balance in F5. But when the E5 is $0.00,
I want F5 to remain $0.00 as well until a new transaction is entered.

Barry

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