2/7=x/(2-4x)

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Solution for 2/7=x/(2-4x) equation: 


D( x )

2-(4*x) = 0

2-(4*x) = 0

2-(4*x) = 0

2-4*x = 0

2-4*x = 0 // - 2

-4*x = -2 // : -4

x = -2/(-4)

x = 1/2

x in (-oo:1/2) U (1/2:+oo)

2/7 = x/(2-(4*x)) // - x/(2-(4*x))

2/7-(x/(2-(4*x))) = 0

2/7-(x/(2-4*x)) = 0

(-1*x)/(2-4*x)+2/7 = 0

(-1*7*x)/(7*(2-4*x))+(2*(2-4*x))/(7*(2-4*x)) = 0

2*(2-4*x)-1*7*x = 0

4-15*x = 0

(4-15*x)/(7*(2-4*x)) = 0

(4-15*x)/(7*(2-4*x)) = 0 // * 7*(2-4*x)

4-15*x = 0

4-15*x = 0 // - 4

-15*x = -4 // : -15

x = -4/(-15)

x = 4/15

x = 4/15

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