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23 February, 19:39

Two column proof 2n-21=n/4

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  1. 23 February, 23:30
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    Simplifying:

    2n-21=0.25n

    We move all terms containing n to the left and all other terms to the right.

    +2n-0.25n=+21

    We simplify left and right side of the equation.

    +1.75n=+21

    We divide both sides of the equation by 1.75 to get n.

    n=12
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