9/4=r/r-4

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Solution for 9/4=r/r-4 equation: 


D( r )

r = 0

r = 0

r = 0

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

9/4 = r/r-4 // - r/r-4

9/4-(r/r)+4 = 0

9/4-1+4 = 0

21/4 = 0

r belongs to the empty set

r belongs to the empty set

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