When simplifying, do you continue to simplify until you recieve an outcome? Or do you stop when you get to the lowest possible equation? 
1+2+4+8+16+32
31+32 (would I stop here? Or continue on to 63?)
1+2+4+8+16+32
31+32 (would I stop here? Or continue on to 63?)
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Keep going until you can go no further.  You can go further than 31 + 32.
      