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

Toán Lớp 7: 2.16>2n>4 Giúp mình với nha .Cảm ơn

Toán Lớp 7: 2.16>2n>4
Giúp mình với nha .Cảm ơn

Comments ( 2 )

  1. 2.16>2n>4
    ↔4<2n<32
    ↔4:2<n<32:2
    ↔2<n<16
    Vậy 2<n<16

  2. 2.16 >2n >4
    => 2.16 >2n >2.2
    => 16 >n>2
    Vậy 16 >n>2
    $hoctot$
     

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

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