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

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Solution for 3/(r-6)+2/(r+6) equation: 


D( r )

r+6 = 0

r-6 = 0

r+6 = 0

r+6 = 0

r+6 = 0 // - 6

r = -6

r-6 = 0

r-6 = 0

r-6 = 0 // + 6

r = 6

r in (-oo:-6) U (-6:6) U (6:+oo)

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

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

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

5*r+6 = 0

(5*r+6)/((r-6)*(r+6)) = 0

(5*r+6)/((r-6)*(r+6)) = 0 // * (r-6)*(r+6)

5*r+6 = 0

5*r+6 = 0 // - 6

5*r = -6 // : 5

r = -6/5

r = -6/5

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