678/x*4+5=457

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Solution for 678/x*4+5=457 equation: 


D( x )

x = 0

x = 0

x = 0

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

4*(678/x)+5 = 457 // - 457

4*(678/x)-457+5 = 0

2712*x^-1 = 452 // : 2712

x^-1 = 1/6

-1 < 0

1/(x^1) = 1/6 // * x^1

1 = 1/6*x^1 // : 1/6

6 = x^1

x = 6

x = 6

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