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

Toán Lớp 6: bt1:tính:a)72.19-362:18,b)750:{130-[(5.14-65)mũ 3+3]}

Toán Lớp 6: bt1:tính:a)72.19-362:18,b)750:{130-[(5.14-65)mũ 3+3]}

Comments ( 2 )

  1. a)72.19-362:18
    =1368 -181/9
    =12131/9
    b)750:{130-[(5.14-65)^3+3]}
    =750:{130-[(70-65)^3+3]}
    =750:[130-(5^3 +3)]
    =750 : [130 – (125 +3)]
    =750 : (130 – 128)
    =750:2=375
     

  2. a ) 72 . 19 – 362 : 18
    = 1368 + 181/9
    = 12312/9 + 181/9
    = 12493/9
    b ) 750 : {130 – [(5 . 14 – 65)^3 + 3]}
    = 750 : {130 – [(70 – 65)^3 + 3]}
    = 750 :{130 – [5^3 + 3]}
    = 750 : {130 – [125 + 3]}
    = 750 : {130 – 128}
    = 750 : 2
    = 375
    #dtkc
     

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