17/18 - 2/3 = 17/18 - 12/18 = 5/18
3
18 - 17 = 1
17/18
-18
-17 - 18 = -35
-1132/33
1217/18+42/3... First - deal with the whole numbers... 12+4=16.Next make both fractions have the same denominator. Since they're both factors of 18, make them both over 18, so you get 17/18+12/18. This equals 29/19 or 111/18 - now - add the original 16 (from the first bit) and your grand total is 1711/18
Negative 18 minus positive 12 is negative 30.
17
4 and 17/18
17/18 minus 2/3 is 5/18