Simplity 6 - [9 - {18 - (15-12-15)}]
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Answer:
21 is the answer
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Step-by-step explanation:
6 - [9 - {18 - (15 - 12 - 15)}]
=> 6 - [9 - {18 + 12}]
=> 6 - [ 9 - 30 ]
=> 6 + 21
=> 27
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