42/x=18-12

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Solution for 42/x=18-12 equation: 


D( x )

x = 0

x = 0

x = 0

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

42/x = 18-12 // - 18-12

42/x-18+12 = 0

42*x^-1 = 6 // : 42

x^-1 = 1/7

-1 < 0

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

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

7 = x^1

x = 7

x = 7

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