2/-5=7/t

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Solution for 2/-5=7/t equation: 


D( t )

t = 0

t = 0

t = 0

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

2/(-5) = 7/t // - 7/t

2/(-5)-(7/t) = 0

2/(-5)-7*t^-1 = 0

-7*t^-1 = 2/5 // : -7

t^-1 = -2/35

-1 < 0

1/(t^1) = -2/35 // * t^1

1 = -2/35*t^1 // : -2/35

-35/2 = t^1

t = -35/2

t = -35/2

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