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Question
Simplify : `3"x"-[3"x"-{3"x"-(3"x"-overline(3"x"-"y"))}]`
Solution
`3"x"-[3"x"-{3"x"-(3"x"-overline(3"x"-"y"))}]`
= 3x − [3x − {3x − (3x − 3x + y)}]
= 3x − [3x − {3x − y}]
= 3x − [3x − 3x + y]
= 3x − y
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