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