ghandiboy ghandiboy
  • 03-02-2017
  • Mathematics
contestada

X+2y =3 -x+y=6 elimination

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Lusifer
Lusifer Lusifer
  • 03-02-2017
You can try using the formula y=mx+b
Answer Link
kariri
kariri kariri
  • 03-02-2017
x=3-2y

plug that into the second equation

-(3-2y)+y=6
-3+2y=6
2y=6+3
2y=9
y=9/2
Answer Link

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