49-[23-{15-(13-4÷2×2)}]
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3
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32
Step-by-step explanation:
49-[23-{15-(13-4÷2×2)}]
49-[23-{15-(13-2×2)}]
49-[23-{15-(13-4)}]
49-[23-{15-9}]
49-[23-6]
49-17
32
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