4/9=8/n

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Solution for 4/9=8/n equation: 


D( n )

n = 0

n = 0

n = 0

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

4/9 = 8/n // - 8/n

4/9-(8/n) = 0

4/9-8*n^-1 = 0

-8*n^-1 = -4/9 // : -8

n^-1 = 1/18

-1 < 0

1/(n^1) = 1/18 // * n^1

1 = 1/18*n^1 // : 1/18

18 = n^1

n = 18

n = 18

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