Question

Simplify : `"a"-["a"-overline("b+a") - {"a"-("a"- overline("b"-"a"))}]`

Answer 1

`"a"-["a"-overline("b+a") - {"a"-("a"- overline ("b"-"a"))}]`

= a − [a − b − a − {a − (a − b + a)}]

= a − [− b − {a − a + b − a}]

= a − [− b − b + a]

= a + b + b − a 

= 2b