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

Toán Lớp 5: tìm x 9,15 × x + 2,85 + x = 48

Toán Lớp 5: tìm x 9,15 × x + 2,85 + x = 48

Comments ( 2 )

  1. 9,15xxx + 2,85 + x = 48
    9,15xxx+x=48-2,85
    9,15xxx+xxx1=45,15
    (9,15+1)xxx+x=45,15
    10,15xxx=45,15
    x=(45,15)/(10,15)=129/29

  2. 9,15x + 2,85 + x = 48
    9,15x+x=48-2,85
    10,15x=45,15
    x=(45,15)/(10,15)
    x=(129)/(29)

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