Answer :

To solve the expression [tex]\(6 - [4 - 3(4 - 2)] - \{7 - 5[4 - 2(7 - 1)]\}\)[/tex] step-by-step, let's carefully work through each component.

1. Start with the innermost parentheses:

[tex]\[ 4 - 2 \][/tex]
which equals:
[tex]\[ 2 \][/tex]

Another inner expression:
[tex]\[ 7 - 1 \][/tex]
which equals:
[tex]\[ 6 \][/tex]

2. Next, complete the multiplications within the brackets and braces:

Substituting back in:
[tex]\[ 3(2) \][/tex]
which equals:
[tex]\[ 6 \][/tex]

Another multiplication:
[tex]\[ 2(6) \][/tex]
which equals:
[tex]\[ 12 \][/tex]

3. Now, substitute these results back into the expressions within the brackets and braces:

[tex]\[ 4 - 6 \][/tex]
which equals:
[tex]\[ -2 \][/tex]

Another calculation:
[tex]\[ 4 - 12 \][/tex]
which equals:
[tex]\[ -8 \][/tex]

4. Evaluate the expression within the braces:

Multiplying by 5:
[tex]\[ 5(-8) \][/tex]
which equals:
[tex]\[ -40 \][/tex]

5. Now, compute within the braces again:

[tex]\[ 7 - (-40) \][/tex]
which equals:
[tex]\[ 47 \][/tex]

6. Substitute results back into the original brackets and braces operations:

Simplifying the expression within the outermost brackets:
[tex]\[ -2 - 47 \][/tex]
which equals:
[tex]\[ -49 \][/tex]

7. Finally, compute the outermost expression:

[tex]\[ 6 - (-49) \][/tex]
which equals:
[tex]\[ 55 \][/tex]

Therefore, the solution to the expression [tex]\(6 - [4 - 3(4 - 2)] - \{7 - 5[4 - 2(7 - 1)]\}\)[/tex] is [tex]\(55\)[/tex].