A)x+2/5=1/2 b)x+3/7=2/5+3/10 C)19/20-x=3/4

A)x+2/5=1/2 b)x+3/7=2/5+3/10

C)19/20-x=3/4

2 bình luận về “A)x+2/5=1/2 b)x+3/7=2/5+3/10 C)19/20-x=3/4”

  1. a) x + 2/5 = 1/2
    => x = 1/2 – 2/5
    => x = 1/10
    Vậy x/10
    b) x + 3/7 = 2/5 + 3/10
    => x + 3/7 = 7/10
    => x = 7/10 – 3/7
    => x = 19/70
    Vậy x = 19/70
    c) 19/20 – x = 3/4
    => x = 19/20 – 3/4
    => x = 1/5
    Vậy x = 1/5
    color{cyan}{@SunDayy}
     

    Trả lời
  2. x + 2/5 = 1/2
    x          = 1/2 – 2/5
    x          = 1/10
    ———————
    x + 3/7 = 2/5 + 3/10
    x + 3/7 = 7/10
    x          = 7/10 – 3/7
    x          = 19/70
    —————————–
    19/20 – x = 3/4
                x = 19/20 – 3/4
                x = 1/5
     

    Trả lời

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