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What is -4/7en - 3/7en = ?

What is -4/7en - 3/7en = ?-example-1

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-(4)/(7)en-(3)/(7)en=\left(-(4)/(7)-(3)/(7)\right)en=(-4-3)/(7)en=(-7)/(7)en=-1en=\boxed{-en}

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