Factoring fold equity percentage.

[Isles]

Can someone please explain the numbers in the following equation to me in detail?

let
x = % time he folds.
so (1-x) = times he calls
7200 in pot
9200 left in your stack
Assuming 22% equity when called

Then your push is EV neutral when

7200x + (1-x){(.22)(22000) - 9200} = 0

Sorry, but I am not a math guy and need it spelled out for me.

In the equation above, I believe he comes up with the 22% equity because he is drawing to the nut flush on the turn.

This equation came from the following thread:

link

Thanks