Wednesday

July 23, 2014

July 23, 2014

Posted by **Jake** on Friday, February 23, 2007 at 10:15am.

be written as abs(w-4)=abs(w)

and if so why surely it should be

abs(4-w)=abs(w)

can any one explain why I can just chane the signs

Yes, it can be written that way.

I dont see that you have changed any signs, you factored a postive seven out of both sides, and divided it out.

Thanks

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