0
Anonymous
If you mean -2a+6a then it simplifies to 4a
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2a-6a+9-4a+9
6a
=6a
It is two terms of an algebraic expression in the form of 6a-8
2a-6a-a=b+4b-4b -5a=5b-4b -5a=1b a=-5 b=1