How do you simplify $2/7 - 2/21$ ?

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Answer 1 · 2016-05-12T07:44:11

$2/7-2/21=4/21$

From the given

$2/7-2/21=2/7*3/3-2/21=6/21-2/21=4/21$

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How do you simplify 2/7 - 2/212/7 - 2/21?