stewartbritni stewartbritni
  • 16-03-2015
  • Mathematics
contestada

Y=2x
X+Y=-9
What's the answer ?

Relax

Respuesta :

konrad509
konrad509 konrad509
  • 16-03-2015
[tex]y=2x\\ x+y=-9\\\\ x+2x=-9\\ 3x=-9\\ x=-3\\\\ y=2\cdot(-3)\\ y=-6\\\\ \boxed{(x,y)=(-3,-6)}[/tex]
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