solve : X+Y = 1, X-Y =2
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Answer:
x+y =1
x-y =2
=2x=3
x=2/3
now put value of x in equation no . 1
therefore 2/3+y=1
2+3y/3=1
2+3y=1×3
3y=3-2
3y=1
y=1/3
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