Diancy0509 Diancy0509
  • 14-09-2018
  • Mathematics
contestada

The sum of 42 and a number n is equal to 51

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fern2017 fern2017
  • 14-09-2018

42   +   n   =   51

42  -  42   +   n  =   51  -   42

                  n  =  9

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