dejat15 dejat15
  • 08-12-2016
  • Mathematics
contestada

wht is the substitution of x+y=9 and x=2y

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Аноним Аноним
  • 08-12-2016
I hope this helps you



2y+y=9



3y=9



y=3


x=2y=2.3=6
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This too plz help!! I would really appreciate it!!