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

Toán Lớp 6: 3.(-2)-3.(-2)+3.10 3.(-2)+3.11+3 11(9-2)+11:(-2) Viết rõ cách làm ạ

Toán Lớp 6: 3.(-2)-3.(-2)+3.10
3.(-2)+3.11+3
11(9-2)+11:(-2)
Viết rõ cách làm ạ

Comments ( 2 )

  1. 3. ( -2 ) – 3. ( -2 ) + 3. 10
    = ( -2 ). ( 3 – 3 ) + 30
    = ( -2 ). 0 + 30
    = 0 + 30
    = 30
    $\text{ ______________________ }$
    3. ( -2 ) + 3. 11 + 3
    = 3. ( -2 + 11 + 1 )
    = 3. 10
    = 30
    $\text{ ______________________ }$
    11. ( 9 – 2 ) + 11 : ( -2 )
    = 11. 7 + ( – 11/2 )
    = 77 – 11/2
    = 71,5
     

  2. @Moon gửi pạn ????????
    $\text{3. ( – 2 ) – 3. ( – 2 ) + 3.10}$
    $\text{= – 6 + 6 + 30 }$
    $\text{= 30}$
    —————————————-
    $\text{3. ( – 2 ) + 3.11 + 3}$
    $\text{= – 6 + 33 + 3}$
    $\text{= 30}$
    ——————————————
    $\text{11. ( 9 – 2 ) + 11 : ( – 2 )}$
    $\text{= 99 – 22 – 5,5}$
    $\text{= 71,5}$

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