peerrssoon peerrssoon
  • 07-06-2017
  • Mathematics
contestada

solve using elimination 3x-4y=9 and -3x+2y=9

Respuesta :

anhtranngoc03or6o8s anhtranngoc03or6o8s
  • 08-06-2017
3x-4y=9
-3x+2y=9
=>-2y=18
=> y= -9
=> 3x-4(-9)=9
=> 3x+36=9
=>3x= -27
=> x = -9
(-9,-9)
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