Another description

Another way to write "sc in each sc and dc across" is "sc in each stitch". If you had, say, 12 sc and 12 dc in the previous row, the last row will have 24 single crochets.

However, if your previous row also had chains, hdc, trc, etc., you would not work in those stitches. So if you had, say 12 sc, 10 chains, and 12 dc, your last row will have 24 single crochets.

If you are still confused please provide us with the previous row.

Happy Crocheting!