7/x-2/8

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Solution for 7/x-2/8 equation: 


D( x )

x = 0

x = 0

x = 0

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

7/x-(2/8) = 0

7/x-1/4 = 0

7*x^-1 = 1/4 // : 7

x^-1 = 1/28

-1 < 0

1/(x^1) = 1/28 // * x^1

1 = 1/28*x^1 // : 1/28

28 = x^1

x = 28

x = 28

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