SOLUTION: Please help with this -5a+7-2a+6 is -7a-1 correct?

Question 99504: Please help with this -5a+7-2a+6 is -7a-1 correct?
Answer by doukungfoo(195) (Show Source): You can put this solution on YOUR website!
Is this what you are given?

If so then to simplify all you can do is combine like terms.
So -5a and -2a combine to equal -7a
Then +7 and +6 combine to equal 13
so the simplified answer would be

Now if the original problem was written with parentheses around 2a+6 like this:

Then you would distribute the - sign by multiplying -1 times 2a and -1 times 6
resulting in this

which would simplify by combining like terms to this:

does that help?
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