7/9=10/x-7

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Solution for 7/9=10/x-7 equation: 


D( x )

x = 0

x = 0

x = 0

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

7/9 = 10/x-7 // - 10/x-7

7/9-(10/x)+7 = 0

7/9-10*x^-1+7 = 0

-10*x^-1 = -70/9 // : -10

x^-1 = 7/9

-1 < 0

1/(x^1) = 7/9 // * x^1

1 = 7/9*x^1 // : 7/9

9/7 = x^1

x = 9/7

x = 9/7

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