3/8=21/t+4

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Solution for 3/8=21/t+4 equation: 


D( t )

t = 0

t = 0

t = 0

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

3/8 = 21/t+4 // - 21/t+4

3/8-(21/t)-4 = 0

3/8-21*t^-1-4 = 0

-21*t^-1 = 29/8 // : -21

t^-1 = -29/168

-1 < 0

1/(t^1) = -29/168 // * t^1

1 = -29/168*t^1 // : -29/168

-168/29 = t^1

t = -168/29

t = -168/29

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