SOLUTION: simplify expression 8a+7-11a

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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