SOLUTION: Simplify using the commutative and associative properties: (2x + 7) + 5x

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Question 553078: Simplify using the commutative and associative properties: (2x + 7) + 5x
Answer by jim_thompson5910(35256) About Me  (Show Source):
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(2x + 7) + 5x


2x + (7 + 5x) ... Associative property of addition


2x + (5x + 7) ... Commutative property of addition


(2x + 5x) + 7 ... Associative property of addition


7x + 7


So (2x + 7) + 5x simplifies to 7x + 7