7/x=40/130

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Solution for 7/x=40/130 equation: 


D( x )

x = 0

x = 0

x = 0

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

7/x = 40/130 // - 40/130

7/x-(40/130) = 0

7/x-4/13 = 0

7*x^-1 = 4/13 // : 7

x^-1 = 4/91

-1 < 0

1/(x^1) = 4/91 // * x^1

1 = 4/91*x^1 // : 4/91

91/4 = x^1

x = 91/4

x = 91/4

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