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# Lance wants to find the total length of 3 boards He uses the expression 3 1/2 + (2 + 4 1/2). How can Lance rewrite the expression using both the Associative and Communitive Properties of Addition?

Lance wants to find the total length of 3 boards He uses the expression 3 1/2 + (2 + 4 1/2). How can Lance rewrite the expression using both the Associative and Communitive Properties of Addition?