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D( y )
3*y+8 = 0
y-5 = 0
3*y+8 = 0
3*y+8 = 0
3*y+8 = 0 // - 8
3*y = -8 // : 3
y = -8/3
y-5 = 0
y-5 = 0
y-5 = 0 // + 5
y = 5
y in (-oo:-8/3) U (-8/3:5) U (5:+oo)
3/(y-5)-(6/(3*y+8))+5/(y-5) = 0
3/(y-5)-6*(3*y+8)^-1+5/(y-5) = 0
3/(y-5)-6/(3*y+8)+5/(y-5) = 0
(3*(3*y+8))/((y-5)*(3*y+8))+(-6*(y-5))/((y-5)*(3*y+8))+(5*(3*y+8))/((y-5)*(3*y+8)) = 0
3*(3*y+8)-6*(y-5)+5*(3*y+8) = 0
3*y+15*y+40+54 = 0
18*y+94 = 0
(18*y+94)/((y-5)*(3*y+8)) = 0
(18*y+94)/((y-5)*(3*y+8)) = 0 // * (y-5)*(3*y+8)
18*y+94 = 0
18*y+94 = 0 // - 94
18*y = -94 // : 18
y = -94/18
y = -47/9
y = -47/9
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