(7/x+9)=(21/36)

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Solution for (7/x+9)=(21/36) equation: 


D( x )

x = 0

x = 0

x = 0

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

7/x+9 = 21/36 // - 21/36

7/x-(21/36)+9 = 0

7/x-7/12+9 = 0

7*x^-1 = -101/12 // : 7

x^-1 = -101/84

-1 < 0

1/(x^1) = -101/84 // * x^1

1 = -101/84*x^1 // : -101/84

-84/101 = x^1

x = -84/101

x = -84/101

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