The given expression is
[tex]18\lbrack24+(42-5\cdot2)\rbrack[/tex]First, we solve the product
[tex]18\lbrack24+(42-10)\rbrack[/tex]Then, we solve the difference
[tex]18\lbrack24+32\rbrack[/tex]Now, we add
[tex]18\lbrack56\rbrack[/tex]At last, we solve the product
[tex]18\lbrack56\rbrack=1008[/tex]