I am having a bit of trouble understanding the formula to work out the EV of a blind steal.

EV = x•1.5 bb – (1-x)•y bb > 0

y is the raise size
x stands for how often a steal must work

Article: http://www.pokerstrategy.com/strategy/sss/1740/1/

Would anyone care to give me an example so I can get my head around please :f_confused: