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

Toán Lớp 6: 57 + 5 . ( x – 3 ) = 72 Tìm x 1phuts

Toán Lớp 6: 57 + 5 . ( x – 3 ) = 72
Tìm x
1phuts

Comments ( 2 )

  1. 57 + 5 . ( x – 3 ) = 72
    =>5 . ( x – 3 )=72 – 57
    =>5 . ( x – 3 )=15
    =>x-3=15:5
    =>x-3=3
    =>x=3+3
    =>x=6
     

  2. 57 + 5 . (x – 3) = 72
    5. ( x – 3) = 72 – 57
    5 . (x – 3) = 15
    x – 3 = 15 : 5
    x – 3 = 3
    x = 3 + 3
    x = 6
     Vậy x = 6
     

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