15/7=45/n

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Solution for 15/7=45/n equation: 


D( n )

n = 0

n = 0

n = 0

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

15/7 = 45/n // - 45/n

15/7-(45/n) = 0

15/7-45*n^-1 = 0

-45*n^-1 = -15/7 // : -45

n^-1 = 1/21

-1 < 0

1/(n^1) = 1/21 // * n^1

1 = 1/21*n^1 // : 1/21

21 = n^1

n = 21

n = 21

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