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D( y )
y+5 = 0
2*y-3 = 0
y+5 = 0
y+5 = 0
y+5 = 0 // - 5
y = -5
2*y-3 = 0
2*y-3 = 0
2*y-3 = 0 // + 3
2*y = 3 // : 2
y = 3/2
y in (-oo:-5) U (-5:3/2) U (3/2:+oo)
5/(2*y-3) = 3/(y+5) // - 3/(y+5)
5/(2*y-3)-(3/(y+5)) = 0
5/(2*y-3)-3*(y+5)^-1 = 0
5/(2*y-3)-3/(y+5) = 0
(5*(y+5))/((2*y-3)*(y+5))+(-3*(2*y-3))/((2*y-3)*(y+5)) = 0
5*(y+5)-3*(2*y-3) = 0
34-y = 0
(34-y)/((2*y-3)*(y+5)) = 0
(34-y)/((2*y-3)*(y+5)) = 0 // * (2*y-3)*(y+5)
34-y = 0
34-y = 0 // - 34
-y = -34 // * -1
y = 34
y = 34
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