Verified Answer :

Goldenbeast

a - {b - [c - (d - e) - f] - g} 
= a - {b - [c - d + e - f] - g} 
= a - {b - c + d - e + f - g} 
= a - b + c - d + e - f + g.
so ur answer is the third one C there all equivalent so the last one is the answer choice so there u go

Answer:

\(a - b + c - d + e - f + g\)

Step-by-step explanation:

We know that,

(-)(-) = (+),

(-)(+) = (-),

(+)(-) = (-)

(+)(+)=(+)

Now,

Here, the given expression is,

\(a - \{b - [c - (d - e) - f] - g\}\)

\(a-\{b-[c-d+e-f]-g\}\)

\(a-\{b-c+d-e+f-g\}\)

\(a-b+c-d+e-f+g\)

Hence, Second option is correct.