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Anonymous
9/13
Wiki User
9/13 x 9/13 is 81/169.
18/26 = 9/13
-81/117 = -9/13
1/13
It is: 9/13 divided by 12/13 = 3/4 in its simplest form
It is: 9/117 = 1/13
72/104 in simplest form is 9 /13