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

Toán Lớp 6: Tìm x thuộc N < 121 + x > chia hết cho 13

Toán Lớp 6: Tìm x thuộc N
< 121 + x > chia hết cho 13

Comments ( 1 )

  1. (121+x)vdots13
    =>121+x inB(13)
    =>121+x={0;13;26;39;52;65;78;91;104;117;130;143;156;169;182;……………}
    Mà x inN
    =>x={9;22;35;48;61;………}
     

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