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Mathematics, 03.08.2019 04:30 DeGeneral8468

I'm having trouble figuring out how to get the answer, 10/7, which is listed in the answer key of some practice problems. could anyone explain how to get that answer? i believe you should multiple everything by the lcd, 30 but i'm lost past that \frac{a}{3} - \frac{a}{10} = \frac{1}{3}

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