Instead of bunching up the decs at one end or in the middle you do them spaced across the row. So you'd probably do something like k7, k2tog, k7, k2tog all across. Then count at the end of the row, or count the decs to make sure the numbers are right.
When I need to increase or decrease evenly, I go to this site. To decrease evenly is the 5th one down the list. I can't seem to wrap my head around the math for this type of thing, and that site has been a lifesaver for me.
__________________ Wenda "Be afraid of bears, of bungee-jumping, of faulty wiring in old houses, but never, ever be afraid of trying something in knitting." Stephanie Pearl-McPhee, Knitting Rules