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19-10-2018
Mathematics

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plzz help very fast make sure to reduce

plzz help very fast make sure to reduce class=

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choixongdong choixongdong

19-10-2018

= (21/28 - 20/28) / (1/8)

= (1/28) / (1/8)

= 1/28 x 8/1

= 8/28

= 2/7

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