(1+ 1/x)×2=(1- 1/x)×4
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Step-by-step explanation:
(1+1/x)2=(1-1/x)4
[(x+1)/x]2=[(x-1)/x]4
(2x+2)/x=(4x-4)/x
2x+2=4x-4
4x-2x=2+4
2x=6
x=3
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