8/9 = 32/36 5/6= 30/36 so 32/36-30/36= 2/36 = 1/18
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7/9 + 5/9 = 12/9 = 4/3 7/9 - 5/9 = 2/9
5 ninths
make lower number the same 6 x 9 = 54 5/6 = 45/54 7/9 = 42/54 so 45/54 (5/6) is greater
two ninths
Expressed as a mixed number in its simplest form, 8/9 + 5/6 = 1 13/18 or one and thirteen eighteenths. Expressed as a decimal, this is equal to 1.72 recurring (that is, 1.72222...)