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math i don't get it

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Scotty and his dad are repairing the railing along the side of the deck. They put up eight supports with 4 feet between each one. If the first support is at one corner of the deck and the eighth support is at the other corner, how long is the side?

  • math i don't get it -

    Let x = the supports. The ____ are the four feet between the supports. How many feet are there?


    x____x____x____x____x____x____x____x

  • math i don't get it -

    I don't get it

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