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

Toán Lớp 5: 1,2 x y + 2,5= 4,2+1,36 nhanh ạ em cần gấp ạ

Toán Lớp 5: 1,2 x y + 2,5= 4,2+1,36 nhanh ạ em cần gấp ạ

Comments ( 2 )

  1. 1,2 × y + 2,5 = 4,2 + 1,36
    1,2 × y + 2,5 = 5,56
    1,2 × y = 5,56 – 2,5
    1,2 × y = 3,06
    y = 3,06 : 1,2
    y = 2,55
     

  2. @Thỏ
    1,2 x y + 2,5 = 4,2 + 1,36
    -> 1,2 x y + 2,5 = 5,56
    -> 1,2 x y = 5,56 – 2,5
    -> 1,2 x y = 3,06
    -> y = 3,06 : 1,2
    -> y = 2,55
     

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

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