Question
Simplify: $[-13 - (-17) + [-22 - (-40)]$
✓
Answer
$[-13 - (-17) + [-22 - (-40)] $
$= (-13 + 17) + (-22 + 40) $
$= 4 + 18 = 22$
$= (-13 + 17) + (-22 + 40) $
$= 4 + 18 = 22$
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