(x-12)/x=0.4

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Solution for (x-12)/x=0.4 equation: 


D( x )

x = 0

x = 0

x = 0

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

(x-12)/x = 0.4 // - 0.4

(x-12)/x-0.4 = 0

(x-12)/x+(-0.4*x)/x = 0

x-0.4*x-12 = 0

0.6*x-12 = 0

(0.6*x-12)/x = 0

(0.6*x-12)/x = 0 // * x

0.6*x-12 = 0

0.6*x-12 = 0 // + 12

0.6*x = 12 // : 0.6

x = 12/0.6

x = 20

x = 20

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