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

Toán Lớp 6: ( 123 + 345) + (456 – 123) –2017 ( 345) − −  ( 17 – 229) + ( 17 – 25 + 229) ; ( 125 – 679 + 145) – ( 125 – 679 )

Toán Lớp 6: ( 123 + 345) + (456 – 123) –2017 ( 345) − − 
( 17 – 229) + ( 17 – 25 + 229) ;
( 125 – 679 + 145) – ( 125 – 679 )

Comments ( 2 )

  1. Giải đáp:
    ( 123 + 345) + (456 – 123) – 2017 ( 345)
    = 468 + ( 456 – 123) – 2017 x 345
    = 468 + 333 – 2017 x 345
    = 468 + 333 – 695865
    = – 695064
    ( 17 – 229) + ( 17 – 25 + 229)
    = ( – 212) +  ( 17 – 25 + 229)
    = ( – 212) + 221
    = -212 + 221
    = 9
    ( 125 – 679 + 145) – ( 125 – 679 )
    = (- 409) – (125 – 679)
    = (- 409) – ( – 554)
    = – 409 – ( – 554)
    = – 409 + 554
    = 145
    $#thuanhuy$
    $\text{Xin hay nhất!}$

  2. Giải đáp:
    Gỉai thích bước giải:
      b) (17- 229) + (17 – 25 + 229)
    = 17-229+17-25+229
    = 17+17-25
    =9
    c)  ( 125-679+145)-(125-679)
    = 125-679+145-125+679
    =(125-125) + (-679+679) + 145
    = 145
    Chúc bạn học tốt=))
    ( mik xin lỗi vì ko làm câu a nhưng câu a bạn đăng đang bị lỗi )

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