20/1=128/x

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Solution for 20/1=128/x equation: 


D( x )

x = 0

x = 0

x = 0

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

20/1 = 128/x // - 128/x

20/1-(128/x) = 0

20-128*x^-1 = 0

-128*x^-1 = -20 // : -128

x^-1 = 5/32

-1 < 0

1/(x^1) = 5/32 // * x^1

1 = 5/32*x^1 // : 5/32

32/5 = x^1

x = 32/5

x = 32/5

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