(-9x+81)/-9x

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Solution for (-9x+81)/-9x equation: 


x in (-oo:+oo)

x*((81-9*x)/(-9)) = 0

(x*(81-9*x))/(-9) = 0

( 81-9*x )

81-9*x = 0 // - 81

-9*x = -81 // : -9

x = -81/(-9)

x = 9

( x )

x = 0

x in { 9, 0 }

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