2/(z-3)=4

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Solution for 2/(z-3)=4 equation: 


D( z )

z-3 = 0

z-3 = 0

z-3 = 0

z-3 = 0 // + 3

z = 3

z in (-oo:3) U (3:+oo)

2/(z-3) = 4 // - 4

2/(z-3)-4 = 0

2/(z-3)+(-4*(z-3))/(z-3) = 0

2-4*(z-3) = 0

14-4*z = 0

(14-4*z)/(z-3) = 0

(14-4*z)/(z-3) = 0 // * z-3

14-4*z = 0

14-4*z = 0 // - 14

-4*z = -14 // : -4

z = -14/(-4)

z = 7/2

z = 7/2

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