ffirst of all glad to join this forum my name is ophir and I will prob be posting

here alot since i have been playing poker ALOT lately . i am kind of new to this so forgive me if i do anything that I shouldnt and also --FORGIVE MY ENGLISH--

I was just wondering since i am not very good at math, what are the calculations on 3 betting prefloop and then betting flop for the two rounds combined.
how often does my opponent need to fold preflop and on the flop for this to be+ ev for me when lets say I am 30%/70 dogg to his precieved range i bet x3 his raise pre and just bet half the pot on flop. i just need to see how to calculate this. so that I can proceed to other calculations cause i just can get this right!!!!
also on floating:
how often does he need to fold on turn whenn he checks/// and to my reraise in order for the float to be profitable just please make up a hand and a range for him.
I just gottta see how you do it so I can move forward.
any help will be greatly apreciated and THANKS alot to any help I get.
thanks alot

I think your general question is about the fold equity on a bet of yours that will be break-even or EV = 0. I'll show you a basic approach.

Showdown EV for a bet by you is

EV = F*P +(1-F)(E*(P+2B)-B)

where
F = fold equity (probability villain folds)
P = pot before your bet
B = your bet

You can set EV to 0 and solve for F, or you can write the equation in Excel and use its Goal Seek function to find the F that gives an EV of 0.

If you set

EVcall = E*(P+2B)-B, then the break-even F is

F' = EVcall/(EVcall-P),

If F' is negative, you have +EV no matter what. Note that if E = 0, i.e., you are on a total bluff, then F' = B/(P+B), a well known result.


If it is not an all-in situation, then you can add implied odds to the profit part of the EVcall factor for a first cut approach to a much more complex situation

thanks alot.. This is very usfull i just found something simmilar but this is much simpler.