3/(1-X)=4

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Solution for 3/(1-X)=4 equation: 


D( X )

1-X = 0

1-X = 0

1-X = 0

1-X = 0 // - 1

-X = -1 // * -1

X = 1

X in (-oo:1) U (1:+oo)

3/(1-X) = 4 // - 4

3/(1-X)-4 = 0

3/(1-X)+(-4*(1-X))/(1-X) = 0

3-4*(1-X) = 0

4*X-1 = 0

(4*X-1)/(1-X) = 0

(4*X-1)/(1-X) = 0 // * 1-X

4*X-1 = 0

4*X-1 = 0 // + 1

4*X = 1 // : 4

X = 1/4

X = 1/4

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