2/3=6/r-2

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Solution for 2/3=6/r-2 equation: 


D( r )

r = 0

r = 0

r = 0

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

2/3 = 6/r-2 // - 6/r-2

2/3-(6/r)+2 = 0

2/3-6*r^-1+2 = 0

-6*r^-1 = -8/3 // : -6

r^-1 = 4/9

-1 < 0

1/(r^1) = 4/9 // * r^1

1 = 4/9*r^1 // : 4/9

9/4 = r^1

r = 9/4

r = 9/4

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