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Old 01-08-2012   #6
Dragonballful23

 
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I think number 2 should be x=20.5 too. Look at-5+7=-2x+43. Next, you do 2=-2x+43. Then you do -41=-2x. TO cancel 2x divide by 2x on both sides. So, x=20.5 or 41\2.
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