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November 18th, 2009, 01:42 PM  #1 
Newbie Joined: Sep 2009 Posts: 11 Thanks: 0  Decimal To Fraction To Decimal
1/7 in decimal form equals 0.14285714285714285. How do I convert that decimal back to 1/7

November 18th, 2009, 02:00 PM  #2  
Global Moderator Joined: May 2007 Posts: 6,770 Thanks: 700  Re: Decimal To Fraction To Decimal Quote:
 
November 19th, 2009, 05:42 AM  #3 
Senior Member Joined: Jun 2009 Posts: 150 Thanks: 0  Re: Decimal To Fraction To Decimal
A = 0.14285714285714285... Move the decimal until it lines up with itself: A/10^6 = 0.00000014285714285... subtract: A (11/10^6) = 0.142857000000000... solve for A A = 142857/999999 = 1/7 

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