K2, k2tog complication

i am knitting a pair of slippers and starting at the toe it tells me to k2, k2tog across to the last 3 sts, end k3. i am starting with 31 sts and i am suppost to end up with 18 sts but no matter how i figure it out i dont end up with 18 sts… i am a remotely a new knitter and this is the first time i have k2tog… am i doing something wrong?

You should k2, then just k2tog k2tog, k2tog, across the row to the last 3 sts, don’t put a k2 between the decs. k2tog x 13 = 13 sts, plus the first 2 and last 3= 18.

thank you very much :slight_smile: