(-30)/(x)=(-40)/(x-2)

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Solution for (-30)/(x)=(-40)/(x-2) equation: 


D( x )

x-2 = 0

x = 0

x-2 = 0

x-2 = 0

x-2 = 0 // + 2

x = 2

x = 0

x = 0

x in (-oo:0) U (0:2) U (2:+oo)

-30/x = -40/(x-2) // + -40/(x-2)

-(-40/(x-2))-30/x = 0

40*(x-2)^-1-30/x = 0

40/(x-2)-30/x = 0

(40*x)/(x*(x-2))+(-30*(x-2))/(x*(x-2)) = 0

40*x-30*(x-2) = 0

10*x+60 = 0

(10*x+60)/(x*(x-2)) = 0

(10*x+60)/(x*(x-2)) = 0 // * x*(x-2)

10*x+60 = 0

10*x+60 = 0 // - 60

10*x = -60 // : 10

x = -60/10

x = -6

x = -6

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