Homework Help: math

Posted by john on Tuesday, October 13, 2009 at 8:38pm.

I need to prove my answer is correct, the directions say to simplify the problem, one problem was 2a + 10a
I got 12a. how could I prove that it's correct, if i can?

math - Tasuba, Tuesday, October 13, 2009 at 8:41pm
2a+10a=12a
12a=12a

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