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2014-09-21T18:46:11+03:00
X=(30+6:6)×10-10:10
   =(30+1)×10-1
   =31×10-1
    =310-1
    =309
Y=(30:6)×5-10×2-4
  =5×5-20-4
  =25-20-4
   =1
Deci x>y......
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