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Call your number "x", and calculate 10 times that number.10x = 7.777...

x = 0.777...

Subtract the second equation from the first, and you get:

9x = 7

If you solve this for "x", you get the number as a fraction. In this case, it is 7/9.

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7/9

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8y ago
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Q: .7 recurring as a fraction
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