0,75=x/(x+6)

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Solution for 0,75=x/(x+6) equation: 


D( x )

x+6 = 0

x+6 = 0

x+6 = 0

x+6 = 0 // - 6

x = -6

x in (-oo:-6) U (-6:+oo)

0.75 = x/(x+6) // - x/(x+6)

0.75-(x/(x+6)) = 0

(-1*x)/(x+6)+0.75 = 0

(-1*x)/(x+6)+(0.75*(x+6))/(x+6) = 0

0.75*(x+6)-1*x = 0

4.5-0.25*x = 0

(4.5-0.25*x)/(x+6) = 0

(4.5-0.25*x)/(x+6) = 0 // * x+6

4.5-0.25*x = 0

4.5-0.25*x = 0 // - 4.5

-0.25*x = -4.5 // : -0.25

x = -4.5/(-0.25)

x = 18

x = 18

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