Brioche k2tog (right slant)
Step 1: Slip the first brioche stitch (consists of 2 stitches), as if to knit to the right hand needle. Make sure you keep the YO intact from the previous stitch.
Step 2: Knit the next stitch.
Step 3: Pass the slipped stitches over the stitch you just knit.
Step 4: Slip (purlwise) that stitch you just knit to the left needle.
Step 5: Pass the next brioche stitch to the left of that knit stitch, over the knit stitch.
Brioche SSK (left slant)
Step 1: Slip the first brioche stitch (consists of 2 stitches) – as if to knit – to the right hand needle.
Step 2: Knit the next stitch AND the next brioche stitch together.
Step 3: Pass the slip stitch on the right hand needle over the knit stitch and the brioche stitch that you just knit together.
You have now created a Brioche decrease with a left slant.