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

Toán Lớp 7: Tính hợp lí nha – 382 – [ 1925 + ( – 382 ) ] – [ ( 3210 – 697 ) – ( 3210 + 597 ) ]

Toán Lớp 7: Tính hợp lí nha – 382 – [ 1925 + ( – 382 ) ] – [ ( 3210 – 697 ) – ( 3210 + 597 ) ]

Comments ( 2 )

  1. – 382 – [ 1925 + ( – 382 ) ] – [ ( 3210 – 697 ) – ( 3210 + 597 ) ]
    =-382-1925+382-(3210-697-3210-597)
    =-382-1925+382+1294
    =1294-1925
    =-631

  2. – 382 – [ 1925 + ( – 382 ) ] – [ ( 3210 – 697 ) – ( 3210 + 597 ) ]
    = – 382 – 1925 + 382 – ( 3210 – 697 – 3210 – 597 )
    = – 382 – 1925 + 382 + 1294
    = 1294 – 1925
    = – 631

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

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