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

Toán Lớp 6: 1/2 – 3/a “ghi từng bước cho mình nha”

Toán Lớp 6: 1/2 – 3/a “ghi từng bước cho mình nha”

Comments ( 2 )

  1. 1/2 – 3/a
    =(1*a)/(2*a) – (3*2)/(a*2
    =(a-6)/(2a

  2. 1/2-3/a
    =a/(2a)-(3.2)/(2a)
    =a/(2a)-6/(2a)
    =(a-6)/(2a)

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

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