tyler631 tyler631
  • 22-01-2018
  • Mathematics
contestada

-7x+9y=25
7x+y=-5
how do I do this

Respuesta :

18757191296
18757191296 18757191296
  • 23-01-2018

10y=30

y=3

x=(5-3)/7

x=2/7

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