4/n+9=12

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Solution for 4/n+9=12 equation: 


D( n )

n = 0

n = 0

n = 0

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

4/n+9 = 12 // - 12

4/n-12+9 = 0

4*n^-1 = 3 // : 4

n^-1 = 3/4

-1 < 0

1/(n^1) = 3/4 // * n^1

1 = 3/4*n^1 // : 3/4

4/3 = n^1

n = 4/3

n = 4/3

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