(4-5x)/(9x+2)

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Solution for (4-5x)/(9x+2) equation: 


D( x )

9*x+2 = 0

9*x+2 = 0

9*x+2 = 0

9*x+2 = 0 // - 2

9*x = -2 // : 9

x = -2/9

x in (-oo:-2/9) U (-2/9:+oo)

(4-(5*x))/(9*x+2) = 0

(4-5*x)/(9*x+2) = 0

4-5*x = 0 // - 4

-5*x = -4 // : -5

x = -4/(-5)

x = 4/5

x = 4/5

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