200÷[150- {20+(16+42÷3)}]
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Step-by-step explanation:
200÷[150-{20+(16+42÷3)}]
200÷[150-{20+(16+14)}]
200÷[150-{20+(30)}]
200÷[150-{50}]
200÷[100]
200÷100
2
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