Simplify the following:
40 + [20 - {28 = 7 - 3+ (30 - 5 of 4)}]
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Answer: 49
Step-by-step explanation:
40+[20-{28/7-3+(30-5*4)}]
40+[20-{28/7-3+(30-20)}]
40+[20-{28/7-3+10}]
40+[20-{4-3+10}]
40+[20-{14-3}]
40+[20-11]
40+9
49
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