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

Toán Lớp 6: 7+2x = 45 . giup minh voi cac ban oi

Toán Lớp 6: 7+2x = 45 . giup minh voi cac ban oi

Comments ( 2 )

  1. 7+2x=45
    =>2x=45-7
    =>2x=38
    =>x=38:2
    =>x=19
    Vậy x=19
     

  2. 7 + 2x = 45 
           2x = 45 – 7 
            2x =    38
               x  =   38 : 2
               x  =      19

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

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