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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: 476-{5.[409-(8.3-21 mũ 2)]-1724} Ai giúp em với ạ

Toán Lớp 6: 476-{5.[409-(8.3-21 mũ 2)]-1724}
Ai giúp em với ạ

Comments ( 2 )

  1.    476 – {5 . [409 – (8 . 3 – 21^2)] – 1724}
    = 476 – {5 . [409 – (24 – 441)] – 1724}
    = 476 – {5 . [409 – (-417)] – 1724}
    = 476 – [5 . (409 + 417) – 1724]
    = 476 – (5 . 826 – 1724)
    = 476 – (4130 – 1724)
    = 476 – 2406
    = -1903
     

  2. 476-{5.[409-(8.3-21^2)]-1724}
    =476-{5.[409-(24-441)]-1724}
    =476-[5.(409+417)-1724]
    =476-(5.826-1724)
    =476-(4130-1724)
    =476-2406
    =-1930
     

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222-9+11+12:2*14+14 = ? ( )