Which of the following equations uses the inverse property of logarithms correctly?

\log _8\left(8^7 ight)=7,\:\:8^{\log _7\left(7 ight)}=8,\:\:8^{\log _{8\:}}^7=7,\:\:\:\log _8\left(7^8 ight)=7,\:\:7^{\log _7^{ }^8=8,}\:\:8^{\log _7\left(8 ight)=7}