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22 May, 12:22

Shannon sells handmade wallets for $12 each.

Yesterday, she sold n wallets. Today, she sold 3 fewer wallets than yesterday.

Over the past two days, she earned a total of $396.

Drag and drop terms and an operation to create an equation that models the situation. Then, solve for n, the number of wallets Shannon sold yesterday.

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  1. 22 May, 16:08
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    She sold n yesterday

    today she sold n-3

    ok, so

    12 (n+n-3) = 396

    12 (2n-3) = 396

    divide both sides by 12

    2n-3=33

    add 3 to both sides

    2n=36

    divide both sides by 2

    n=18

    sold 18 wallets yesterday
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