SOLUTION: how do i do these using substitution? 1. 2x-y=-6 4x+y=-6 2. 2x-y=3 4x-y=-1 3. 6x-5y=-1 5x-4y=-1

Algebra ->  Linear-equations -> SOLUTION: how do i do these using substitution? 1. 2x-y=-6 4x+y=-6 2. 2x-y=3 4x-y=-1 3. 6x-5y=-1 5x-4y=-1      Log On


   

Question 698415: how do i do these using substitution?
1. 2x-y=-6
4x+y=-6
2. 2x-y=3
4x-y=-1
3. 6x-5y=-1
5x-4y=-1
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
how do i do these using substitution?
1. 2x-y=-6
4x+y=-6
Solve for y in either eqn, sub for it in the other eqn.
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2. 2x-y=3
4x-y=-1
Same as #1.
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3. 6x-5y=-1
5x-4y=-1
Solve for either x or y, then sub in the other eqn.