jaquelinelopez jaquelinelopez
  • 29-01-2015
  • Mathematics
Answered

2x-4y=2 -2x+3y=0 elimination



Answer :

naǫ
naǫ naǫ
  • 30-01-2015
[tex]2x-4y=2 \\ \underline{-2x+3y=0} \\ -4y+3y=2+0 \\ -y=2 \\ y=-2 \\ \\ 2x-4y=2 \\ 2x-4 \times (-2)=2 \\ 2x+8=2 \\ 2x=2-8 \\ 2x=-6 \\ x=\frac{-6}{2} \\ x=-3 \\ \\ (x,y)=(-3,-2)[/tex]
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eu99li
eu99li eu99li
  • 30-01-2015

2x-4y=2

-2x+3y=0

-------------------- (+)

3y-4y=2

-y=2   /*(-1)

y=-2

2x-4y=2

2x-4*(-2)=2

2x+8=2   /-8

2x=-6

x=-3


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