Posted by **debbie** on Wednesday, March 7, 2007 at 3:10pm.

simplify-

3+2+7=7+2+3

4(2+1)=4(2)+4(1)

(2+3)+6=2+(3+6)

Huh? Simplify...

3+2+7=12

4(2+1)=12

(2+3)+6=11

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