Respuesta :

divide both sides by (r+y)
[tex]\frac{w(r+y)}{r+y}=\frac{d}{r+y}[/tex]
[tex](w)(\frac{r+y}{r+y})=\frac{d}{r+y}[/tex]
[tex](w)(1)=\frac{d}{r+y}[/tex]
[tex]w=\frac{d}{r+y}[/tex]

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