-42/x-3=-7

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Solution for -42/x-3=-7 equation: 


D( x )

x = 0

x = 0

x = 0

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

-42/x-3 = -7 // + 7

7-42/x-3 = 0

-42*x^-1 = -4 // : -42

x^-1 = 2/21

-1 < 0

1/(x^1) = 2/21 // * x^1

1 = 2/21*x^1 // : 2/21

21/2 = x^1

x = 21/2

x = 21/2

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