new one sorry abt the last pic

Answer:
[tex]\frac{7^{12} }{6^{8} }[/tex] or [tex]\frac{6^{-8} }{7^{-12} }[/tex]
Step-by-step explanation:
[tex](\frac{6^{2} }{7^{3} } )^{-4}[/tex]
→ First find the reciprocal in order to remove the negative sign
[tex](\frac{7^{3} }{6^{2} } )^{4}[/tex]
→ Now multiply the power
[tex]\frac{7^{12} }{6^{8} }[/tex]