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9 April, 11:18

Make a equation to solve this problem:

A number is 1/7 of another number. The difference of the numbers is 18. (assume that you are subtracting the smaller number from the larger number) Find the numbers.

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  1. 9 April, 11:42
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    X=1/7y

    y-x=18

    add x to both sides

    y=18+x

    subsitute

    x=1/7 (18+x)

    multiply both sdies by 7

    7x=18+x

    subtract x form both sdies

    6x=18

    divide by 6

    x=3

    subsitute

    y=18+3

    y=21

    x=3

    y=21
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