7/9=5/n

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Solution for 7/9=5/n equation: 


D( n )

n = 0

n = 0

n = 0

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

7/9 = 5/n // - 5/n

7/9-(5/n) = 0

7/9-5*n^-1 = 0

-5*n^-1 = -7/9 // : -5

n^-1 = 7/45

-1 < 0

1/(n^1) = 7/45 // * n^1

1 = 7/45*n^1 // : 7/45

45/7 = n^1

n = 45/7

n = 45/7

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