SOLUTION: use the commutative and/or associative laws to rewrite 7+(6+b) as b+13

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Question 757714: use the commutative and/or associative laws to rewrite 7+(6+b) as b+13
Answer by solver91311(24713) About Me  (Show Source):
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Associate the 7 and the 6, do the addition, then commute the 13 and the b.

John

Egw to Beta kai to Sigma
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