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27 October, 12:37

Find the domain of the rational expression: 4-x/3x+21

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  1. 27 October, 12:53
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    (4-x) / (3x+21)

    The denominator cannot be zero

    3x + 21 ≠ 0

    3x ≠ - 21

    x ≠ - 7

    The domain of the function will be all real number except - 7

    x
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