Помогите решить подробно
[m]\frac{p^{\frac{4}{7}}\cdot p^{-\frac{1}{21}}}{p^{\frac{11}{21}}}=p^{\frac{4}{7}+(-\frac{1}{21})-\frac{11}{21}}=p^{\frac{12}{21}-\frac{12}{21}}=p^{0}=1[/m]
