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31 July, 21:37

Seven times a number is equal to 9 more than 4 times the number. find the number

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  1. 31 July, 23:47
    0
    Represent 'a number' by x

    7 times x equals 9 more than 4 times x

    7 times x=9+4 times x

    7x=9+4x

    subtract 4x from both sides

    3x=9

    divide 3

    x=3

    the number is 3
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