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

Toán Lớp 6: s=1+2-3-4+5+6-7-8+9+10-…+2018-2019-2020+2021

Toán Lớp 6: s=1+2-3-4+5+6-7-8+9+10-…+2018-2019-2020+2021

Comments ( 2 )

  1. Giải đáp:
     
    Lời giải và giải thích chi tiết:
    ↓↓↓↓↓↓↓↓↓↓↓↓↓
    S = 1+2-3-4+5+6-7-8+…+ 2018–2019-2020+2021  
    S = (1+2-3-4)+…+(2017+2018–2019-2020) + 2021 
    S = (-4)=…+(-4)+2021+2020:4 =505
    S = (-4).505+2021  
    S = (-2020)+2021  
    S = 1

  2. CHÚC BẠN HỌC TỐT
    MK XIN CTLHN Ạ

    toan-lop-6-s-1-2-3-4-5-6-7-8-9-10-2018-2019-2020-2021

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

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