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

Toán Lớp 5: 8/13 + 18/35 Mẫu số chung là bao nhiêu

Toán Lớp 5: 8/13 + 18/35
Mẫu số chung là bao nhiêu

Comments ( 2 )

  1. $\dfrac{8}{13}$+$\dfrac{18}{35}$
    =$\dfrac{8×35}{455}$+$\dfrac{18×13}{455}$
    =$\dfrac{280}{455}$+$\dfrac{234}{455}$
    =$\dfrac{514}{455}$
     

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

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