log5·log5(3)·log5(1/3) log3(5)·log5(3)·log5(1/3) log3(2)·log5(3)·log8(5) 미안 하 다

log5·log5(3)·log5(1/3) log3(5)·log5(3)·log5(1/3) log3(2)·log5(3)·log8(5) 미안 하 다

원형=(lg2/lg3)·(lg3/lg5)·(lg5/lg8)
=(lg2/lg3)·(lg3/lg5)·(lg5/3lg2)
약분
=1/3