Toán Lớp 6: a) 33.(17 – 5) – 17.(33 – 5)
b) 307 – [(180.40 – 160) : 22 + 9] : 2
c) 12 + 3. {90 : [39 – (23 – 5)2]}
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Toán Lớp 6: a) 33.(17 – 5) – 17.(33 – 5)
b) 307 – [(180.40 – 160) : 22 + 9] : 2
c) 12 + 3. {90 : [39 – (23 – 5)2]}
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