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

Toán Lớp 5: Biết: a x 35 – 1,25 = 145,75. Như vậy, a = –.

Toán Lớp 5: Biết: a x 35 – 1,25 = 145,75. Như vậy, a = ………

Comments ( 2 )

  1. a x 35 – 1,25 = 145,75
    ax35=145,75+1,25
    ax35=289/2
    a=289/2:35
    a=289/70

  2. Ta có:
    a.35-1,25=145,75
    => a.35=145,75-1,25
    => a.35=144,5
    => a=144,5:35
    => a=(289)/(70) 
    Vậy a=(289)/(70)
     

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

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