9/x=7+y

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Solution for 9/x=7+y equation: 


D( x )

x = 0

x = 0

x = 0

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

9/x = y+7 // - y+7

9/x-y-7 = 0

9*x^-1 = -(-y-7) // : 9

x^-1 = (y+7)/9

-1 < 0

1/(x^1) = (y+7)/9 // * x^1

1 = x^1*((y+7)/9) // : (y+7)/9

9*(y+7)^-1 = x^1

x = 9*(y+7)^-1

x = 9*(y+7)^-1

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