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

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Question 852656: x-y=-4 x+y=-4
Answer by JulietG(1812) About Me  (Show Source):
You can put this solution on YOUR website!
X - y = -4
X + y = -4
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Think about it for a few seconds :-).
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If adding a number and subtracting a number yield the same result, then the number MUST be 0. If y is 0, then X MUST be -4.