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

Toán Lớp 7: `0,(3) + 0,4(2) + x = 4,0(8)` giúp mình với

Toán Lớp 7: 0,(3) + 0,4(2) + x = 4,0(8)
giúp mình với

Comments ( 2 )

  1. $#Dứa$
    0,(3) + 0,4(2) + x = 4,0(8)
    0,7(5) + x = 4,0(8)
    x = 4,0(8) – 0,7(5)
    x = 3,(3)

  2. 0,(3) + 0,4(2) + x = 4,0(8)
    => 0,7(5) + x = 4,0(8)
    => x = 4,0(8) – 0,7(5)
    => x = 3,(3)
     

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

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