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Anonymous
18/21= eighteen twenty oneths
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What is nevatigve two sevenths plus two thirds
It is: 2/3+2/7 = 20/21
52/21 or 2 and 10/21
The sum of 2/3 and 5/7 = 1 8/21
2/3 + 2/7 = 14/21 + 6/21 = 20/21