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OpenStudy (anonymous):
can anyone help finding the lowest common denominators of the following three fractions: A B C ______ , ________ , _______ 7A-49 6a+42 a^2-49
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OpenStudy (anonymous):
Pull out the GCF(greatest common factor) for the first two, then factor the third fraction using the difference of two squares using the pattern (a-b)(a+b). By now you should start to see something they all have in common.
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