=if(aa6<0,(1-f6)/(f6+aa6),0)

This will return 0 if aa6 is not less than 0. Replace the 0 with whatever
you want if aa6 is not less than 0.

Shaun


"changetires" wrote:


I want to write this as a formula: 1 minus F6 divided by F6 plus Z6 plus
AA6, but only if AA6 is less than zero


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