139/x=7

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Solution for 139/x=7 equation: 


D( x )

x = 0

x = 0

x = 0

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

139/x = 7 // - 7

139/x-7 = 0

139*x^-1 = 7 // : 139

x^-1 = 7/139

-1 < 0

1/(x^1) = 7/139 // * x^1

1 = 7/139*x^1 // : 7/139

139/7 = x^1

x = 139/7

x = 139/7

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