SOLUTION: x+y=-4 2x-4y=22

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Question 166284: x+y=-4
2x-4y=22
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.x%2By=-4
2.2x-4y=22
Multiply eq.1 by 4 and add to eq. 2,
4%28x%2By%29%2B%282x-4y%29=4%28-4%29%2B22
4x%2B4y%2B2x-4y=-16%2B22
6x=6
highlight%28x=1%29
From eq. 1,
x%2By=-4
1%2By=-4
highlight%28y=-5%29