15/7=3/X

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Solution for 15/7=3/X equation: 


D( X )

X = 0

X = 0

X = 0

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

15/7 = 3/X // - 3/X

15/7-(3/X) = 0

15/7-3*X^-1 = 0

-3*X^-1 = -15/7 // : -3

X^-1 = 5/7

-1 < 0

1/(X^1) = 5/7 // * X^1

1 = 5/7*X^1 // : 5/7

7/5 = X^1

X = 7/5

X = 7/5

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