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

Toán Lớp 5: Tìm x 8,75 × x + 1,25 × x = 20

Toán Lớp 5: Tìm x
8,75 × x + 1,25 × x = 20

Comments ( 2 )

  1. 8,75 xx x + 1,25 xx x =20
    x xx (8,75 + 1,25) = 20
    x xx 10 = 20
    x= 20 : 10
    x=2
    Vậy x=2
     

  2. 8,75 × x + 1,25 × x = 20
    x × ( 8,75 + 1,25 ) = 20
    x ×         10           = 20 
    x                           = 20 : 10
    x                           =      2
           Xin ctlhn            
     

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