[5NL] A7s...blind vs blind...limped pot...line check.

Villain continues with 17% of hands, so 17% of the time we lose 3bb. 83% of the time, we win 1bb.

Not sure how to continue with that to find out exactly what the EV is.

If villain only continues with AA then we raise ATC pre, right?

Also, other then the limp pre, how is the rest of the hand played?