January 27th, 2012, 05:34 AM  #1 
Member Joined: Jan 2012 Posts: 33 Thanks: 0  Simplify (?)
What about this? I get: Multiply by 18 but the answer is I know I'm missing something again... 
January 27th, 2012, 07:00 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 19,977 Thanks: 1851 
On removing the parentheses enclosing the second term, you should have applied the preceding minus sign to both of the terms within the parentheses, not just the first. Then you multiplied by 18 . . . if you do that, you need to divide by 18 as well. Towards the end, you omitted an "x" from your work, but carried on as though it were present.

January 27th, 2012, 07:51 AM  #3 
Member Joined: Jan 2012 Posts: 33 Thanks: 0  Re: Simplify (?)
Thank you for your answer.


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