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a store sells y+3 boxes of pencils. each box has 5y-7 pencils. how many pencils does the store sell?

  • math -

    Combine y+3 with 5y-7

    Y+3=5y-7

    Subtract 3 to both sides
    Y=5y-10

    Subtract 5y to both sides

    -4y=10

    Divide -4 to both sides

    Y=-25

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