63x^20y^16/3x^9y^15 helllp
\(\frac{63x^{20}y^{16}}{3x^{9}y^{15}}=\frac{63}{3}\frac{x^{20}}{x^{9}}\frac{y^{16}}{y^{15}}=\frac{21}{1}\frac{x^{17}}{1}\frac{1}{y}=\frac{21y^{17}}{y}\)
did that information help
