5/1.25=12/n

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Solution for 5/1.25=12/n equation: 


D( n )

n = 0

n = 0

n = 0

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

5/1.25 = 12/n // - 12/n

5/1.25-(12/n) = 0

5/1.25-12*n^-1 = 0

-12*n^-1 = -4 // : -12

n^-1 = 1/3

-1 < 0

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

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

3 = n^1

n = 3

n = 3

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