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    achavez505's Avatar
    achavez505 Posts: 1, Reputation: 1
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    #1

    Feb 20, 2012, 11:08 PM
    Estimate each sum or difference? 7/9 2/3
    I got the common denominator, which was 27, I came up with 39/27, and then I divided 39 by 27 which I got 1.44, I'm having a problem estimating,
    ojasdoshi's Avatar
    ojasdoshi Posts: 3, Reputation: 1
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    #2

    Feb 27, 2012, 10:05 PM
    The LCM of the denominators 3 and 9 is 9 itself. Hence the 2nd fraction can be represented as 6/9.
    Thus the sum would be 7+6/9 = 13/9 = 1 + 4/9 = 1.44
    Similarly, the difference would be 7-6/9 = 1/9 = 0.11...
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