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

Toán Lớp 6: `30\vdots n+2` =…

Toán Lớp 6: 30\vdots n+2
……………

Comments ( 2 )

  1. Đáp án:
     
    Giải thích các bước giải:
     

    toan-lop-6-30-vdots-n-2

  2. ta có 30n+2
     =>n+2∈Ư(30)={1;2;3;5;6;…;30}
    =>n∈{-1;0;1;3;4;…;28}
    vậy n∈{-1;0;1;3;4;…;28}

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