My middle schooler (sixth) has to calculate the integers 0-20 using only 6 nines. We have done all but the integer 14. He can not use decimals or double the nine like 99 or 19. the fraction 9/9 is okay. Keep in mind of course the order of operations. Any assistance you can provide would be appreciated.

Example is the integer 15 9+9-(9+9+9)/9=15

Thanks
frustrated mom

How about 9 + {[(9*9)+9]/(9+9)}