1 per3a pankat 7 kali 1 per A pangkat 4

[tex]( \frac{1}{3a} ) {}^{7} \times ( \frac{1}{a} ) {}^{4} [/tex]

[tex] = ( \frac{ {1}^{7} }{ {3}^{7} {a}^{7} } ) \times ( \frac{ {1}^{4} }{ {a}^{4} } )[/tex]

[tex] = \frac{1}{ {3}^{7} {a}^{7 + 4} } [/tex]

[tex] = \frac{1}{ {3}^{7} {a}^{11} } [/tex]