(2t-1)/(2t)=21

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Solution for (2t-1)/(2t)=21 equation: 


D( t )

2*t = 0

2*t = 0

2*t = 0

2*t = 0 // : 2

t = 0

t in (-oo:0) U (0:+oo)

(2*t-1)/(2*t) = 21 // - 21

(2*t-1)/(2*t)-21 = 0

(2*t-1)/(2*t)+(-21*2*t)/(2*t) = 0

2*t-21*2*t-1 = 0

-40*t-1 = 0

(-40*t-1)/(2*t) = 0

(-40*t-1)/(2*t) = 0 // * 2*t

-40*t-1 = 0

-40*t-1 = 0 // + 1

-40*t = 1 // : -40

t = 1/(-40)

t = -1/40

t = -1/40

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