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31 March, 01:02

What is the difference of 3 times a number and 18 is 39. what is the number

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  1. 31 March, 01:24
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    First, write out the equation

    3x-18=39

    it's much easier to solve it this way

    then, get x alone

    (3x-18) + 18=39+18

    3x=57

    3x/3=57/3

    so, x=19
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