Alright let me see if I get this straight.

Lets just say with any given hand, against a range of villain hands, I am a 55% favorite to win after the flop

If there is 40$ in the pot, I am due 22$ of that if we both pushed all in?

Does equity only apply when you go all in?

Also, does that mean equity is essentially the same principle as pot/implied odds?

if you have 18% chance of hitting your nut flush with one cards to come, that means that any bet less than 18% of the pot on the flop is going to be +EV?

Lets just say the pot is 100BB and you have to call 20BB to see the river for ease of math and if you don't hit your hand on the river, you check/fold