1.5/5=2.1/n

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Solution for 1.5/5=2.1/n equation: 


D( n )

n = 0

n = 0

n = 0

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

1.5/5 = 2.1/n // - 2.1/n

1.5/5-(2.1/n) = 0

1.5/5-2.1*n^-1 = 0

-2.1*n^-1 = -0.3 // : -2.1

n^-1 = 0.14285714

-1 < 0

1/(n^1) = 0.14285714 // * n^1

1 = 0.14285714*n^1 // : 0.14285714

7.00000014 = n^1

n = 7.00000014

n = 7.00000014

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