\"\"

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The perimeter of a triangle is the sum of the measures of three sides.

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So, \"\".

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Expression for the perimeter is \"\".

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\"\"                (Write the expression)

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\"\"            (Group like terms)

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\"\"                               (Combine like terms)

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The simplified expression for the perimeter of the triangle is \"\".\"\"

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The simplified expression for the perimeter of the triangle is \"\".