Nodia Nodia
  • 02-02-2015
  • Mathematics
contestada

2x -y=-1
3x-2y=1
elimination somebody do this for me

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Pandagirl
Pandagirl Pandagirl
  • 02-02-2015
-2(2x-y)=-1
3x-2y=1

-4x+2y=2
3x-2y=1

-x=3 (x=-3)
(-3,__)

2(-3)-y=-1
-6-y=-1
-y=-1+6
-y=5
y=-5
so..(-3,-5)
  

Answer Link
logo88
logo88 logo88
  • 02-02-2015
2x-y=-1  (1)
3x-2y=1  (2)
(1) * 2--> 4x-2y=-2   (3)
(3) - (2)
x= -3

sub x= -3 into (1)
2(-3)-y=-1
-6-y=-1
-y=5
y= -5
Answer Link

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