subtract (2/7 -5/21 ) from the sum of 3/4, 5/7 and 7/12

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03-02-2021
Mathematics

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subtract (2/7 -5/21 ) from the sum of 3/4, 5/7 and 7/12

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rachchae rachchae · Answer 1 · 2021-02-03T11:14:30+01:00

rachchae rachchae

03-02-2021

2/7 - 5/21 = 6/21 - 5/21 (find common denominator first, then subtract)
6/21 - 5/21 = 1/21

3/4 = 63/84
5/7 = 60/84
7/12 = 49/84

63/84 + 60/84+ 49/84 = 172/84
172/84 - 4/84 = 168/84

The answer is 168/84, or 2. Hope this helped!

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subtract (2/7 -5/21 ) from the sum of 3/4, 5/7 and 7/12​

Respuesta :

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subtract (2/7 -5/21 ) from the sum of 3/4, 5/7 and 7/12