Question

Simplify:

19−[4+16−(12−2)]

Answer 1

Given expression:
= 19−[4+16−(12−2)]
= 19 - [4 + {16 - 10}] [Removing parentheses] 
= 19 - [4 + 6] [Removing braces] 
= 19 - 10 [Removing square brackets] 
= 9