21=15e^(1/2)t

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Solution for 21=15e^(1/2)t equation: 


t in (-oo:+oo)

21 = 15*e^(1/2)*t // - 15*e^(1/2)*t

21-(15*e^(1/2)*t) = 0

21-15*e^(1/2)*t = 0

21-15*e^(1/2)*t = 0 // - 21

-15*e^(1/2)*t = -21 // : -15*e^(1/2)

t = -21/(-15*e^(1/2))

t = (7*e^(-1/2))/5

t = (7*e^(-1/2))/5

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