haris785
haris785 haris785
  • 14-07-2016
  • Mathematics
contestada

If a+b-c=d, if a-b+c=e, then a= ?

Respuesta :

nataliemarie67060798 nataliemarie67060798
  • 14-07-2016
a + b = d+c 
a - b = e - c 
The b and c cancel out. 
2a = d+e 
a = (d+e)/2 

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