sonyadmorris
sonyadmorris sonyadmorris
  • 19-07-2016
  • Mathematics
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linear pair (x-39) + (x+61)

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dalendrk
dalendrk dalendrk
  • 19-07-2016
(x - 39) + (x + 61) = x - 39 + x + 61 = (x + x) + (-39 + 61) = 2x + 22
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