SOLUTION: I am trying to solve by addition but my answers are wrong. Can you help me solve this equation by addition? I tried multiplying the first equation by 2 but it didn't work. 2x-4y

Question 961528: I am trying to solve by addition but my answers are wrong. Can you help me solve this equation by addition? I tried multiplying the first equation by 2 but it didn't work.
2x-4y=11
-4x+8y=-22
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
I am trying to solve by addition but my answers are wrong. Can you help me solve this equation by addition? I tried multiplying the first equation by 2 but it didn't work.
2x-4y=11
-4x+8y=-22
=====================
The 2nd eqn is -2 times the 1st.
--> the same eqn twice
Dependent, no unique solution.
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