Wouldn’t K2T through the back loops accomplish the same goal as SSK?
:??
It may, try it and see.
Pretty much, yes. You may find one lays a bit nicer than the other though. Like Suzeeq said, try it and see how you like it.
K2tog through the back loops does accomplish the same thing - I did that in a blanket recently.
What I’ve found is that there is not ONE way to do SSK. The pattern booklet (that I did not read) actually wanted the SSK to be slip 2 purl wise then knit 2 tog. Others I’ve seen say to slip one purl wise, other knit wise then k 2 tog. 
The beauty of knitting SSK is that you can decide what works best for you and what you like the best!
Good luck! 
i haven`t been able to get the idea of SSK, but the K2tog through the back loops needs no explanation ----- THANKS!!!
Karen
The scarf that I’m making now requires both but they pretty much look the same. Try both out like suggested and see what you like better.
When you knit 2 together the decrease will slant to the left. When you ssk the decrease will slant to the right - so they really are different. If you have a problem doing a ssk, you can knit 1, slip 1 and then pass the slip stitch over the knit stitch - s, k, psso.
Hope this helps!
She meant the difference between SSK and k2tog through the back loops. They both slant to the left, unless you knit combi.
What´s knitting “combi”? :shrug:
karen
To quote Elizabeth Zimmermann:
[I]NOW, A WARNING: Some misled people would have you substitute Knit-two-together-through-the-back-loops for sl 1, k1, psso or SSK.[/I]
[I]AVOID THIS; Don’t try to convince them of their error ([U]it twists both stitches)[/U]; just smile and avoid.[/I]
Combination style. It’s explained on Annie Modesitt’s site - http://www.anniemodesitt.com/
sue