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Question 7656: simplify expression 8a+7-11a
Answer by drglass(89)   (Show Source):
You can put this solution on YOUR website! I'm assuming you understand commutativity and associativity, because they are required for this problem.
To be hyper-exact, we need to re-write this expression as follows:
(8a + 7) - 11a
Using commutativity, we can switch 8a and 7 to get:
(7 + 8a) - 11a
Now, use the associative property:
7 + (8a - 11a)
This gives us
7 - 3a
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