Question 6666
3x-2y=5.....[1]
-6x+4y=7....[2]
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Multiplying equation [1] by 2,we get-
 6x - 4y = 5
-6x + 4y = 7
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Clearly,this is not possible,as both x and y are getting eliminated when we add up the two equations.Please check your question,and post again.
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Prabhat.