(6/x)=(7)/(x+3)

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Solution for (6/x)=(7)/(x+3) equation: 


D( x )

x = 0

x+3 = 0

x = 0

x = 0

x+3 = 0

x+3 = 0

x+3 = 0 // - 3

x = -3

x in (-oo:-3) U (-3:0) U (0:+oo)

6/x = 7/(x+3) // - 7/(x+3)

6/x-(7/(x+3)) = 0

6/x-7*(x+3)^-1 = 0

6/x-7/(x+3) = 0

(-7*x)/(x*(x+3))+(6*(x+3))/(x*(x+3)) = 0

6*(x+3)-7*x = 0

18-x = 0

(18-x)/(x*(x+3)) = 0

(18-x)/(x*(x+3)) = 0 // * x*(x+3)

18-x = 0

18-x = 0 // - 18

-x = -18 // * -1

x = 18

x = 18

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