Answer:
4/49
Step-by-step explanation:
7-5 = 2
2/7*2/7 = 4/49
[tex] \frac{ (\frac{2}{7})^{7} }{( \frac{2}{7} )^{5} } = ({ \frac{2}{7} )}^{7 - 5} \\ = ( \frac{2}{7})^{2} \\ = \frac{4}{49} [/tex]
