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Anonymous
The awnser is 1/9 this is becuase 9 divided by 9= 1 and 81 divided by 9= 9
Wiki User
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The simplest form for 81 over 90 is 9/10
63 ÷ 9 = 7 81 ÷ 9 = 9 Thus giving 7 over 9 as the simplest form
-81/117 = -9/13
2/9
8/9