2 1/3 + 1 6/7 first needs to be converted to the least common factor of the denominator, so the least common factor of 3 and 7 is 21. then you would multiply the top and the bottom by the number that multiplies with the denominator to get 21. The number to multiply to 3 would be multiplied by 7 to get 21 and vise versa, so for 2 1/3, 1 x 7 = 7 and 3 x 7 = 21 which makes 2 7/21. For 1 6/7, 6 x 3 = 18 and 7 x 3 = 21 which makes 1 18/21. 2 7/21 + 1 18/21 = 4 4/21 or, in improper form, 88/21
6/7, six sevenths
two and two sevenths plus six and five sixths is 52.
11/21 (eleven over twenty-one)
1 46/70
-1/3 x -6/7 = 1 x 6 = 6 divided by 3 x 7= 21 or 6/21 divide both sides by 3 to reduce it = 2/7 and the sign is positive (SINCE TWO NEGATIVES multiplied = a positive) which kind of makes sense, right, if have 6 of these sevenths, and you want to have one third of them that means 6/2 = 3 or 3 sevenths is a third of six sevenths...
2/7
Ten sevenths or one and three sevenths
6/7, six sevenths
8.523809524 or 179/21 or 8 and 11/21
two and two sevenths plus six and five sixths is 52.
I don't know. That is why I'm asking.
11/21 (eleven over twenty-one)
Well, firstly, the LCM (Lowest Common Multiple) of 3 and 7 is 21. Try to convert those fractions into fractions with denominators of 21. Multiply 3x7 in one thirds and 1x7, which changes one third to seven twenty-oneths. Multiply 7x3 in two sevenths and 2x3, which changes two sevenths to six twenty-oneths. Therefore, one third (seven twenty-oneths) is greater than two sevenths (six twenty-oneths).
6/7
It is 10/21.
Expressed as a mixed number in its simplest form, 3/7 + 6/7 = 1 2/7 or one and two sevenths.
12/14 + 7/14 = 19/14