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math

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if 7x=4y, and y/z=7/5 , then x/z=

  • math - ,

    Rearrange 7x=4y
    <=> y = 7x/4

    Substitute into y/z = 7/5
    <=> 7x/4z = 7/5

    Cancelling common factor (7) and rearranging:
    .: x/z = 4/5

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