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

Toán Lớp 6: 17. 5 + 7 . 17 – 16 . 12 tính nhanh 2 phút

Toán Lớp 6: 17. 5 + 7 . 17 – 16 . 12
tính nhanh
2 phút

Comments ( 2 )

  1. 17 . 5 + 7 . 17 – 16 . 12
    = 17 . ( 5 + 7) – 16 . 12
    = 17 . 12 – 16 . 12
    = ( 17 – 16) . 12
    = 1 . 12
    = 12
     

  2. \text {@Luff Cat}
     17 . 5 + 7 . 17 – 16 . 12
    =17 . ( 5 + 7 ) – 16 . 12
    =17 . 12 – 16 . 12
    = 12 . ( 17-16)
    =12 .1
    =12

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

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