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x/3 - 1/x = 2/3

find a common denominator: 3x

(x*x)/3x - (1*3)/3x = 2/3

(x2-3)/(3x) = 2/3

(x2-3)*(3) = (3x)*(2)

3x2-9 = 6x

3x2-6x-9 = 0

x2-2x-3 = 0

(x-3)(x+1)=0

x-3=0 & x+1=0

x=3 & x=-1

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13y ago

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