-1 - [ - 1 - { - 1 - ( - 1 - a) } ]
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Answer:
-1-[-1-{-1-(-1-a)}]
-1 -[ -1 - { -1 +1 + a} ]
-1 -[ -1 - { a } ]
-1 - [ -1 - a ]
-1 +1 + a
a
so the answer is a
I hope it helps u
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