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

Toán Lớp 7: So sánh 127/-128 và -1345/1344

Toán Lớp 7: So sánh 127/-128 và -1345/1344

Comments ( 2 )

  1. Giải đáp:
     Ta có: 127/-128 = -127/128 = -1 + 1/128
    ⇒ -127/128 > -1
    -1345/1344 = -1 – 1/1344
    ⇒ -1345/1344 < -1
    Suy ra: -127/128 > -1 > -1345/1344
    ⇒ -127/128 > -1345/1344
    Vậy -127/128 > -1345/1344

  2. 127/-128 = -127/128 = -2667/2688
    -1345/1344 =-2690/2688
    Vì:
    -2667 > -2690
    → -2667/2688 > -2690/2688
    ⇒ 127/-128 > -1345/1344
     

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

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