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10 May, 19:26

If you want to find the difference of 6/25 - 4/5 what common denominator should you choose? why?

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  1. 10 May, 19:30
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    You should always choose the LCM is a common denominator

    LCM (5,25) = 25

    the first fraction already has 25 as its denominator

    the second fraction we must multiply by 5 above and below

    so

    6/25-4*5/5*5

    6/25-20/25 =

    -14/25
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