SOLUTION: {7x-y=6} {-7x+y=-6}

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Question 620169: {7x-y=6}
{-7x+y=-6}
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
7x-y=6
-7x%2By=-6 add these two equations
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+0=0 which is always true. So these two equations are the same line
To see that, take the first equation and mutilply both sides by -1. See what you get.