The common denominator of four fifths and two ninths is 45.
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Ninths.
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.
15 and two thirds plus four fifths = one two fiftenth
Four fifths = 4 ÷ 5 = 0.8 Seven ninths = 7 ÷ 9 = 0.777... 0.777... < 0.8
To compare four fifths and three tenths, we need to have a common denominator. In this case, the least common denominator is 10. When both fractions are converted to have a denominator of 10, four fifths becomes 8/10 and three tenths becomes 3/10. Therefore, 8/10 (four fifths) is greater than 3/10 (three tenths).