Question

b-[b-(a+b)-{b-(b-a-b)}+2a]

Answer 1

2b is the correct ans

Answer 2

b-[b-(a+b)-{b-(b-a-b)}+2a]
b-[b-a-b-{b-b+a+b}+2a]
b-[b-a-b-b+b-a-b+2a]
b-b+a+b+b-b+a+b-2a
b-b+b+b-b+b+a+a-2a
0+2b-0+2a-2a
2b+2a-2a
2b-0
2b
2b is correct answer