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

Toán Lớp 6: A=-5/7 . 9/-23 + 9/23 . -22/17 + (290 -262/230

Home/ Toán Lớp 6: A=-5/7 . 9/-23 + 9/23 . -22/17 + (290 -262/230

Toán Lớp 6: A=-5/7 . 9/-23 + 9/23 . -22/17 + (290 -262/230

Tháng Hai 16, 2023 Toán học 2 Comments 0 views

Toán Lớp 6: A=-5/7 . 9/-23 + 9/23 . -22/17 + (290 -262/230

Comments ( 2 )

  1. maianh67
    maianh67
    16 Tháng Hai, 2023 at 10:43 sáng
    Reply
    -5/7 . 9/-23 + 9/23 . -22/17 + (290 – 262/230)
    = 5/7 . 9/23 + 9/23 . -22/17 + (290 – 262/230)
    = 9/23 . (5/7 + -22/17) + 290 – 262/230
    = 9/23 . (-69/119) + 290 – 262/230
    = -27/119 + 290 – 262/230
    = 290 – 27/119 – 262/230
    = 290 – 37388/27370
    = 288 10018/27370

  2. cobebongdem
    cobebongdem
    16 Tháng Hai, 2023 at 10:43 sáng
    Reply
    −5/7  .  9/(−23)+9/23  .  −22/17+(290−262/230)
    =5/7  .  9/23+9/23  .  −22/17+(290−262/230)
    =9/23  .  (5/7+−22/17)+290−262/230
    =9/23  .  (−69/119)+290−262/230
    =−27/119+290−262/230
    =290−27/119−262/230
    =290−37388/27370
    =288 10018/27370
     

    toan-lop-6-a-5-7-9-23-9-23-22-17-290-262-230

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

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