in the pair of linear equation X + Y is = 9 and x- Y = 1 value of x and y
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X+Y=9 eq (1)
X-Y=1. eq(2)
By adding eq. 1 & 2
2X=10
X=10/2=5
Putting the value of X in eq 1
5+Y=9
Y=9-5=4
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