9/10 =27/30
2/3 = 20/30
27/30 - 20/30 = 7/30
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9 - 11 - 2 - 2 2/3 + 6 1/3 = -1/3 or minus one third. Expressed as a decimal, this is equal to -0.3 recurring (that is, -0.3333...)
8 3/9 - 5 2/3 = 2 2/3 (that is, two and two thirds).
8/3 x 9/10 = 72/30 = 12/5 = 2 and 2/5
To subtract two fractions, they must have a common denominator. In this case, the common denominator is 9. So, convert 2/3 to 6/9. Then, subtract 6/9 - 4/9 to get 2/9 as the result.
8 and 1/3