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christelletele
christelletele christelletele
  • 25-08-2016
  • Mathematics
Answered

13+23+12+7 name the property used in each step

Verified Answer :

Kunchan
Kunchan Kunchan
  • 26-08-2016

13+23+12+7
(13+23)+(12+7)
35+19
54

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