20 - [6 -(4+2)]
20 - [6 - (4 + 2)]
= 20 - [6 - 6]
= 20 - 0
= 20 Ans.
Innermost parentheses first 4+2=6, so 20-(6-6)
Then the next parentheses 6-6=0, so 20-0
20-0 is 20
20 - [ 6 - (6) ]
= 20 - [0]
= 20
Ans
20
Comments
20 - [6 - (4 + 2)]
= 20 - [6 - 6]
= 20 - 0
= 20 Ans.
Innermost parentheses first 4+2=6, so 20-(6-6)
Then the next parentheses 6-6=0, so 20-0
20-0 is 20
20 - [ 6 - (6) ]
= 20 - [0]
= 20
Ans
20