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Math Help - 7 x _ = 2 x _

  1. #1
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    7 x _ = 2 x _

    Ok, I'm embarrased to even post this but this is 3rd grade pre-algebra...

    The question is to find the common factor.

    Here is the question:

    7 x _ = 2 x _

    I was assuming 7 x 2 = 2 x 7
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  2. #2
    Member Mentia's Avatar
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    Dec 2008
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    yeah that looks fine to me. If both blanks must be the same number then you must use zero for both blanks. but in general the greatest common factor of 2 and 7 is 1 since they're both prime.
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