7/(x-9)+9

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Solution for 7/(x-9)+9 equation: 


D( x )

x-9 = 0

x-9 = 0

x-9 = 0

x-9 = 0 // + 9

x = 9

x in (-oo:9) U (9:+oo)

7/(x-9)+9 = 0

7/(x-9)+(9*(x-9))/(x-9) = 0

9*(x-9)+7 = 0

9*x-74 = 0

(9*x-74)/(x-9) = 0

(9*x-74)/(x-9) = 0 // * x-9

9*x-74 = 0

9*x-74 = 0 // + 74

9*x = 74 // : 9

x = 74/9

x = 74/9

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