0.3/(0.2-x)=20

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Solution for 0.3/(0.2-x)=20 equation: 


D( x )

0.2-x = 0

0.2-x = 0

0.2-x = 0

0.2-x = 0 // - 0.2

-x = -0.2 // * -1

x = 0.2

x in (-oo:0.2) U (0.2:+oo)

0.3/(0.2-x) = 20 // - 20

0.3/(0.2-x)-20 = 0

0.3/(0.2-x)+(-20*(0.2-x))/(0.2-x) = 0

0.3-20*(0.2-x) = 0

20*x-3.7 = 0

(20*x-3.7)/(0.2-x) = 0

(20*x-3.7)/(0.2-x) = 0 // * 0.2-x

20*x-3.7 = 0

20*x-3.7 = 0 // + 3.7

20*x = 3.7 // : 20

x = 3.7/20

x = 0.185

x = 0.185

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