15/x+7=12

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Solution for 15/x+7=12 equation: 


D( x )

x = 0

x = 0

x = 0

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

15/x+7 = 12 // - 12

15/x-12+7 = 0

15*x^-1 = 5 // : 15

x^-1 = 1/3

-1 < 0

1/(x^1) = 1/3 // * x^1

1 = 1/3*x^1 // : 1/3

3 = x^1

x = 3

x = 3

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