Using BODMAS rule
= 5 - [ -3 - {2-(2×(-3) +1)} +93 -5]
= 5 - [ -3 - {2-(-6 +1)} +93 -5]
= 5 - [ - 3 - {2 +5 } +93 -5]
= 5 - [ - 3 - 7 +93 -5]
= 5 - [ 78]
= 5 -78
= - 73
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