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

Toán Lớp 6: 2019+(-247)+(-53)-2019 13.70-50.[(19-3)²:2+2³]

Toán Lớp 6: 2019+(-247)+(-53)-2019
13.70-50.[(19-3)²:2+2³]

Comments ( 2 )

  1. Giải đáp:
      2019+(-247)+(-51)-2019
      =2019-2019+(-247)+(-51)
    =0+(-298)
    =-298
    13.70-50.[(19-3)^2/2+2^3]
    =13.70-50.[(19-3)^2/2+8]
    =13.70-50.[16^2/2+8
    =13.70-50.[144/2+8]
    =13.70-50.80
    =910-4000
    =-3090

  2. 2019 + ( -247 ) + ( -53 ) – 2019
    = ( 2019 – 2019 ) – ( 247 + 53 )
    = 0 – 300
    = -300
    $\text{ _________________________ }$
    13. 70 – 50. [ ( 19 – 3 )^2 : 2 + 2^3 ]
    = 13. 70 – 50. [ 16^2 : 2 + 8 ]
    = 910 – 50. [ 256 : 2 + 8 ]
    = 910 – 50. [ 128 + 8 ]
    = 910 – 50. 136
    = 910 – 6800
    = -5890
     

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