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21 December, 10:43

Three multiplied by the sum of 4 and a number is the same as 18 more than the number. Find the number.

If n is "the number," which equation could be used to solve for the number?

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  1. 21 December, 13:20
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    3 (4+n) = 18+n

    distribute

    12+3n=18+n

    minus n both sides

    12+2n=18

    minus 12 both sides

    2n=6

    divide by 2

    n=3

    the number is 3

    equation is

    3 (4+n) = 18+n
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