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

Toán Lớp 6: a ) ( 6 -5 + 3 ) – ( -13 + 7 ) – ( – 5 ) b ) – ( -5 + 3 -7 ) – ( 4 +5 -8 ) c ) – 15 – ( 4 – 8 + 3 -12 )

Toán Lớp 6: a ) ( 6 -5 + 3 ) – ( -13 + 7 ) – ( – 5 )
b ) – ( -5 + 3 -7 ) – ( 4 +5 -8 )
c ) – 15 – ( 4 – 8 + 3 -12 )

Comments ( 2 )

  1. a. (6-5+3)-(-13+7)-(-5)
    = (4) – (-6) – (-5)
    = 4 + 6 + 5
    ⇒ 15
    b. -(-5+3-7)-(4+5-8)
    =-(-9) – (1)
    = 9 – 1
    ⇒ 8
    c. -15-(4-8+3-12)
    = -15 – (-13)
    = -15 + 13
    ⇒ -2

  2. a ) ( 6 -5 + 3 ) – ( -13 + 7 ) – ( – 5 )
    =(1+3) -(-6) +5
    =4+6+5
    =15
    b ) – ( -5 + 3 -7 ) – ( 4 +5 -8 )
    =  -(-2-7)-(9-8)
    = 9-1
    =8
    c) – 15 – ( 4 – 8 + 3 -12 )
    =-15-(-4+3-12)
    =-15-(-1-12)
    =-15-(-13)
    =-2
        Chúc bạn học tốt!!
    *Nếu đúng cho  mình xin câu trả lời hay nhất nhaaa cảm ơn bạn nhiều !!
     

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