42/(8-6x)=12

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Solution for 42/(8-6x)=12 equation: 


D( x )

8-(6*x) = 0

8-(6*x) = 0

8-(6*x) = 0

8-6*x = 0

8-6*x = 0 // - 8

-6*x = -8 // : -6

x = -8/(-6)

x = 4/3

x in (-oo:4/3) U (4/3:+oo)

42/(8-(6*x)) = 12 // - 12

42/(8-(6*x))-12 = 0

42/(8-6*x)-12 = 0

42/(8-6*x)+(-12*(8-6*x))/(8-6*x) = 0

42-12*(8-6*x) = 0

72*x-54 = 0

(72*x-54)/(8-6*x) = 0

(72*x-54)/(8-6*x) = 0 // * 8-6*x

72*x-54 = 0

72*x-54 = 0 // + 54

72*x = 54 // : 72

x = 54/72

x = 3/4

x = 3/4

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