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0.86 repeating can be represented as 0.86868686... To convert this into a fraction, we can set x = 0.86868686... and multiply by 100 to shift the decimal point two places to the right, giving 100x = 86.86868686... Subtracting the original equation from this new equation gives 99x = 86, so x = 86/99. Therefore, 0.86 repeating as a fraction is 86/99.
The fraction for .4 repeating is 2/5.
If all 3 digits are repeating then as a fraction it is 215/999
It is: 82/99 = 0.828282.....repeating
It is: 2/15 as a fraction