If a baker doubles recipe that call for 6-23 of flour how many cups of flour will be needed in all

Unsure of what you mean by "6-23."  There's no subtraction in this problem.  

If you meant "6/23," then "doubling" that results in 12/23 cups.  Still, that does not look right.  Go back and ensure that you have copied down the original problem exactly.

9

Step-by-step explanation:

;-;