12/8=(5+x)/(x-3)

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Solution for 12/8=(5+x)/(x-3) equation: 


D( x )

x-3 = 0

x-3 = 0

x-3 = 0

x-3 = 0 // + 3

x = 3

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

12/8 = (x+5)/(x-3) // - (x+5)/(x-3)

12/8-((x+5)/(x-3)) = 0

(-1*(x+5))/(x-3)+3/2 = 0

(-1*2*(x+5))/(2*(x-3))+(3*(x-3))/(2*(x-3)) = 0

3*(x-3)-1*2*(x+5) = 0

x-19 = 0

(x-19)/(2*(x-3)) = 0

(x-19)/(2*(x-3)) = 0 // * 2*(x-3)

x-19 = 0

x-19 = 0 // + 19

x = 19

x = 19

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