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05-09-2014
Mathematics

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what is 7/9 as a decimal terminating or repeating decimal

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Аноним Аноним

05-09-2014

n=7/9

9n=7

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10n-n=9n

10n-n=7

10n=7+n

10n=7+0.7...

10n=7.7...

n=0.777777...

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