(1-2x)/(8-x)=3/1

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Solution for (1-2x)/(8-x)=3/1 equation: 


D( x )

8-x = 0

8-x = 0

8-x = 0

8-x = 0 // - 8

-x = -8 // * -1

x = 8

x in (-oo:8) U (8:+oo)

(1-(2*x))/(8-x) = 3/1 // - 3/1

(1-(2*x))/(8-x)-(3/1) = 0

(1-2*x)/(8-x)-3 = 0

(1-2*x)/(8-x)+(-3*(8-x))/(8-x) = 0

1-3*(8-x)-2*x = 0

x-23 = 0

(x-23)/(8-x) = 0

(x-23)/(8-x) = 0 // * 8-x

x-23 = 0

x-23 = 0 // + 23

x = 23

x = 23

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