45 - [38 - {60 ÷ 3 - (6 - 9 ÷ 3) ÷ 3}]. Simplify the expression.

Question: 45 - [38 - {60 ÷ 3 - (6 - 9 ÷ 3) ÷ 3}]. Simplify the expression.

Solution:
45 - [38 - {60 ÷ 3 - (6 - 9 ÷ 3) ÷ 3}]
= 45 - [38 - {60 ÷ 3 - 3 ÷ 3}]
= 45 - [38 - {20 - 1}]
= 45 - [38 - 19]
= 45 - 19
= 26.