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

Toán Lớp 6: a,x-17/36=-15/16.4/27 b,4/15-x=-16/25.5/64 c,|x-2|=-9/12.-4/3 d, x-3^2/25=(-4/5)^2

Toán Lớp 6: a,x-17/36=-15/16.4/27
b,4/15-x=-16/25.5/64
c,|x-2|=-9/12.-4/3
d, x-3^2/25=(-4/5)^2

Comments ( 1 )

  1. a)
    x – 17/36 = (-15)/16 . 4/27
    ⇒ x – 17/36 = -5/36
    ⇒ x = -5/36 + 17/36 = 12/36 = 1/3
    b)
    4/15 – x = -16/25 . 5/64
    ⇒ 4/15 – x = -1/20
    c)
    |x – 2| = -9/12 . (-4)/3
    ⇒ |x – 2| = 1
    ⇒ x – 2 = 1 ; x – 2 = -1
    ⇒ x = 3 ; x = 1
    d)
    text(Ko rõ)

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

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