SOLUTION: -2 x - 2 y =5 8 x+ 8 y=-20 Having a hard time with these. thanks for all help!

Question 222199: -2 x - 2 y =5
8 x+ 8 y=-20
Having a hard time with these. thanks for all help!
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
-2 x - 2 y =5
8 x+ 8 y=-20
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Multiply thru 1st by 4 to get:
-8x -8y = 20
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Add that to the 2nd equation to get
0 + 0 = 0
----------------
That means the two equations are really the same.
Solve one of them for y and you get y = -x-(5/2)
Solution: (x , -x-(5/2)) for x = any Real Number
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Cheers,
Stan H.
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