Respuesta :

[tex]\frac{63x^{20}y^{16}}{3x^{9}y^{15}}=\frac{63}{3}\frac{x^{20}}{x^{9}}\frac{y^{16}}{y^{15}}=\frac{21}{1}\frac{x^{17}}{1}\frac{1}{y}=\frac{21y^{17}}{y}[/tex]
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