4/x+7=12

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Solution for 4/x+7=12 equation: 


D( x )

x = 0

x = 0

x = 0

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

4/x+7 = 12 // - 12

4/x-12+7 = 0

4*x^-1 = 5 // : 4

x^-1 = 5/4

-1 < 0

1/(x^1) = 5/4 // * x^1

1 = 5/4*x^1 // : 5/4

4/5 = x^1

x = 4/5

x = 4/5

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