9.40=x/(1.78-x)

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Solution for 9.40=x/(1.78-x) equation:


D( x )

1.78-x = 0

1.78-x = 0

1.78-x = 0

1.78-x = 0 // - 1.78

-x = -1.78 // * -1

x = 1.78

x in (-oo:1.78) U (1.78:+oo)

9.4 = x/(1.78-x) // - x/(1.78-x)

9.4-(x/(1.78-x)) = 0

(-1*x)/(1.78-x)+9.4 = 0

(-1*x)/(1.78-x)+(9.4*(1.78-x))/(1.78-x) = 0

9.4*(1.78-x)-1*x = 0

16.732-10.4*x = 0

(16.732-10.4*x)/(1.78-x) = 0

(16.732-10.4*x)/(1.78-x) = 0 // * 1.78-x

16.732-10.4*x = 0

16.732-10.4*x = 0 // - 16.732

-10.4*x = -16.732 // : -10.4

x = -16.732/(-10.4)

x = 1.60884615

x = 1.60884615

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