4=8/(5x-1)

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Solution for 4=8/(5x-1) equation:


D( x )

5*x-1 = 0

5*x-1 = 0

5*x-1 = 0

5*x-1 = 0 // + 1

5*x = 1 // : 5

x = 1/5

x in (-oo:1/5) U (1/5:+oo)

4 = 8/(5*x-1) // - 8/(5*x-1)

4-(8/(5*x-1)) = 0

4-8*(5*x-1)^-1 = 0

4-8/(5*x-1) = 0

(4*(5*x-1))/(5*x-1)-8/(5*x-1) = 0

4*(5*x-1)-8 = 0

20*x-12 = 0

(20*x-12)/(5*x-1) = 0

(20*x-12)/(5*x-1) = 0 // * 5*x-1

20*x-12 = 0

20*x-12 = 0 // + 12

20*x = 12 // : 20

x = 12/20

x = 3/5

x = 3/5

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