Posted by **Cecilia (Again)** on Saturday, September 12, 2009 at 12:34pm.

Okay, this isn't really a big question. I know how to do it, there's just one thing I have to make sure of.

The problem is:

5x+4y-11x-2y

I know I need to combine like terms, but which sign do I use to do that.

Like if I want to combine 5x and 11x, do I use the sign before the 11x (-) of the sign after 5x (+) ????

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