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5 June, 12:47

3 times the sum of a number and 4 is the same as 18 more than the number. What is the number?

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  1. 5 June, 14:01
    0
    The answer is 3

    3 (n+4) = 18+n

    3n+12=18+n

    -12 - 12

    3n=6+n

    -n - n

    2n=6

    - -

    2 2

    n=3
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