15/3/5=75/n

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Solution for 15/3/5=75/n equation:


D( n )

n = 0

n = 0

n = 0

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

(15/3)/5 = 75/n // - 75/n

(15/3)/5-(75/n) = 0

(15/3)/5-75*n^-1 = 0

-75*n^-1 = -1 // : -75

n^-1 = 1/75

-1 < 0

1/(n^1) = 1/75 // * n^1

1 = 1/75*n^1 // : 1/75

75 = n^1

n = 75

n = 75

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