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

Toán Lớp 6: 145 – (x + 23)= 45 123x chia hết cho 2

Toán Lớp 6: 145 – (x + 23)= 45 123x chia hết cho 2

Comments ( 2 )

  1. Lời giải và giải thích chi tiết:
    145 – (x + 23) = 45
    => x + 23 = 100
    => x = 77
    Vậy  x = 77
    \overline(123x) \vdots 2
    => x = {0 ; 2 ; 4 ; 6 ; 8}
    Vậy  x = {0 ; 2 ; 4 ; 6 ; 8}

  2. 145 – (x + 23) = 45
    x – 23 = 145 – 45
    x – 23 = 100
    x = 100 + 23
    x = 123
    —————
    Để \overline{123x} \vdots 2
    => x ∈ {0;2;4;6;8}
     

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

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