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5/7 - 5/21 = 15/21 - 5/21 = 10/215/7 - 5/21 = 15/21 - 5/21 = 10/215/7 - 5/21 = 15/21 - 5/21 = 10/215/7 - 5/21 = 15/21 - 5/21 = 10/21
(21)*(5/7) = (5*21)/7 = (5)*(21/7) = (5)*(3) = 15
21/5 is the simplest form.
5
To convert 21 over 5 to an improper fraction, you need to perform long division. 21 divided by 5 equals 4 with a remainder of 1. Therefore, 21 over 5 as an improper fraction is 4 and 1/5, which can also be written as 21/5.