PacKing
PacKing PacKing
  • 28-02-2017
  • Mathematics
contestada

find the value of two numbers if their sum is 12 and their difference is 4

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bcalle
bcalle bcalle
  • 28-02-2017
x+y=12
x-y=4
-----------
2x= 16
x= 8
y= 4
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