7/x=8/12

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Solution for 7/x=8/12 equation: 


D( x )

x = 0

x = 0

x = 0

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

7/x = 8/12 // - 8/12

7/x-(8/12) = 0

7/x-2/3 = 0

7*x^-1 = 2/3 // : 7

x^-1 = 2/21

-1 < 0

1/(x^1) = 2/21 // * x^1

1 = 2/21*x^1 // : 2/21

21/2 = x^1

x = 21/2

x = 21/2

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