7/x=21/12

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Solution for 7/x=21/12 equation: 


D( x )

x = 0

x = 0

x = 0

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

7/x = 21/12 // - 21/12

7/x-(21/12) = 0

7/x-7/4 = 0

7*x^-1 = 7/4 // : 7

x^-1 = 1/4

-1 < 0

1/(x^1) = 1/4 // * x^1

1 = 1/4*x^1 // : 1/4

4 = x^1

x = 4

x = 4

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