7/n=5/n-2

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


D( n )

n = 0

n = 0

n = 0

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

7/n = 5/n-2 // - 5/n-2

7/n-(5/n)+2 = 0

7/n-5*n^-1+2 = 0

2*n^-1 = -2 // : 2

n^-1 = -1

-1 < 0

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

1 = -1*n^1 // : -1

-1 = n^1

n = -1

n = -1

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