The teacher will be very surprised to see your correct solution 😉
log(27)*x = 1/3
log27x = 1/3
x = 1/3 / (log(27))
sum
1 -------- 9*log(3)
=
1 -------- 9*log(3)
product
1 -------- 9*log(3)
=
1 -------- 9*log(3)
1/(9*log(3))
1 x1 = -------- 9*log(3)
x1 = 1/(9*log(3))