7/20=56/n

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Solution for 7/20=56/n equation: 


D( n )

n = 0

n = 0

n = 0

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

7/20 = 56/n // - 56/n

7/20-(56/n) = 0

7/20-56*n^-1 = 0

-56*n^-1 = -7/20 // : -56

n^-1 = 1/160

-1 < 0

1/(n^1) = 1/160 // * n^1

1 = 1/160*n^1 // : 1/160

160 = n^1

n = 160

n = 160

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