SOLUTION: 2x-4y=6 2x+y=1 my teacher said to solve this by using substitution but i keep getting the worng answer, help plz :)!

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Question 258777: 2x-4y=6
2x+y=1

my teacher said to solve this by using substitution but i keep getting the worng answer, help plz :)!
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.2x-4y=6
2.2x%2By=1+
Since both have a "2x" term solve eq. 1 for 2x and substitute into eq. 2,
1.2x-4y=6
2x=4y%2B6
.
.
.
2.2x%2By=1+
%284y%2B6%29%2By=1+
5y%2B6=1+
5y=-5+
y=-1
Then from above,
2x=4y%2B6
2x=4%28-1%29%2B6
2x=-4%2B6
2x=2
x=1
.
.
.
(x,y)=(1,-1)