jillian0013
05.01.2020 •
Mathematics
How do i turn reapeating decimals into fractions?
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Ответ:
Let .
Then .
So , or , and so .
The basic idea is to find the period of the repeating decimal, move the digits belonging to one period over to the left of the decimal point by multiplying by , then subtract the original repeating decimal from this new number, and finally divide by .
A slightly more complicated example:
Let .
Then .
Then , or
Ответ: