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

Toán Lớp 6: 39+(13-26)-(62+39) -28+(-35)-92+(-82) 15-(-38)+(-55)-47 Giải giúp

Toán Lớp 6: 39+(13-26)-(62+39)
-28+(-35)-92+(-82)
15-(-38)+(-55)-47
Giải giúp

Comments ( 2 )

  1. a)
    39+(13-26)-(62+39)
    =39+(-13)-101
    =39-13-101
    =-75
    b)
    -28+(-35)-92+(-82)
    =-28-35-92-82
    =-237
    c)
    15-(-38)+(-55)-47
    =15+38-55-47
    =-49
    _________________________________
    (mik ghi a,b,c cho dẽ phân biệt từng bài toán nha)
    $@Masonn$
     

  2. 39+(13-26)-(62+39)
    =39+13-26-62-39
    =(39-39)+(13-26-62)
    =0+(-75)
    =-75
    $\\$
    -28+(-35)-92+(-82)
    =-28-35-92-82
    =-(28+82)-(35+92)
    =-110-127
    =237
    $\\$
    15-(-38)+(-55)-47
    =15+38-55-47
    =(15-55)+(38-47)
    =-40+(-9)
    =-49
     

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