A seventh is, in common math, 1 divided by 7. As this show, a full 7 sevenths would equate to 1.
Thus, we can conclude that there is no way that 3 sevenths can be 9, as it is less than 7 sevenths.
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1 whole and 4 sevenths
3/7 x 21 = 9
Expressed as a mixed number in its simplest form, 27/21 is equal to 1 3/7 or one and three sevenths.
no...three sevenths is equal to 15/35 and two fifths is equal to 14/35.
Three sevenths plus six sevenths equals nine sevenths. To add fractions with the same denominator, you simply add the numerators together and keep the denominator the same. In this case, 3 + 6 = 9, so the sum is 9/7.