20=12+64/x

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Solution for 20=12+64/x equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

20 = 64/x+12 // - 64/x+12

20-(64/x)-12 = 0

20-64*x^-1-12 = 0

-64*x^-1 = -8 // : -64

x^-1 = 1/8

-1 < 0

1/(x^1) = 1/8 // * x^1

1 = 1/8*x^1 // : 1/8

8 = x^1

x = 8

x = 8

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