1/(4x-8)=7

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Solution for 1/(4x-8)=7 equation: 


D( x )

4*x-8 = 0

4*x-8 = 0

4*x-8 = 0

4*x-8 = 0 // + 8

4*x = 8 // : 4

x = 8/4

x = 2

x in (-oo:2) U (2:+oo)

1/(4*x-8) = 7 // - 7

1/(4*x-8)-7 = 0

1/(4*x-8)+(-7*(4*x-8))/(4*x-8) = 0

1-7*(4*x-8) = 0

57-28*x = 0

(57-28*x)/(4*x-8) = 0

(57-28*x)/(4*x-8) = 0 // * 4*x-8

57-28*x = 0

57-28*x = 0 // - 57

-28*x = -57 // : -28

x = -57/(-28)

x = 57/28

x = 57/28

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