630/90/x=1

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Solution for 630/90/x=1 equation: 


D( x )

x = 0

x = 0

x = 0

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

(630/90)/x = 1 // - 1

(630/90)/x-1 = 0

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

x^-1 = 1/7

-1 < 0

1/(x^1) = 1/7 // * x^1

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

7 = x^1

x = 7

x = 7

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