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

Toán Lớp 5: 3) Tìm x: A) x – 12,98 – 27,6 = 27,8 – 6,27 .……………………………………………………… ……………………………………………………… ……………………………………………………… ….…………………………………………………..

Toán Lớp 5: 3) Tìm x:
A) x – 12,98 – 27,6 = 27,8 – 6,27
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b. 76,22 – x – 25,7 = 30 + 5,52
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Comments ( 2 )

  1. a)
    x – 12,98 – 27,6 = 27,8 – 6,27
    x – 12,98 – 27,6 = 21,53
    x – 12,98 = 21,53 + 27,6
    x – 12,98 = 49,13
    x = 49,13 + 12,98
    x = 62,11
    b) 
    76,22 – x – 25,7 = 30 + 5,52
    76,22 – x – 25,7 = 35,52
    76,22 – x = 35,52 + 25,7
    76,22 – x = 61,22
    x = 76,22 – 61,22
    x = 15

  2. A)x – 12,98 – 27,6 = 27,8 – 6,27
       x -12,98 – 27,6 = 21,53
       x -12,98 = 21,53 +27,6
       x -12,98 = 49,13
       x = 49,13 + 12,98
       x = 62,11
    B) 76,22 – x – 25,7 = 30 + 5,52
        76,22 – x – 25,7 = 32,52
        76,22 – x = 32,52 +25,7
        76,22 – x = 58,22
        x = 76,22 – 58,22
        x = 18
        Nhớ cho 5 sao

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