find value of k for which X + Y = 2 and x minus y = k has unique solution
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we know that in unique solution the lines are intersecting and
a1/a2=b1/b2 is not equal to c1/c2
then ,
no any value is find...
a1/a2=b1/b2 is not equal to c1/c2
then ,
no any value is find...
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