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Old 22nd April 2016 | 09:23
  #13 (permalink)  
Mr Optimistic
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Joined: Jun 2009
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From: Bedford, UK
The equals sign means they are equal. So if you do the same to both sides they stay equal and to stay equal that's all you can do. So assaid, add 2x to both sides and subtract y from both sides. Then divide both sides by 2.
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