tìm x 5/2 – 3/2 : x = 0,25 2/3 + x : 3/7 = 4/15

2 bình luận về “tìm x 5/2 – 3/2 : x = 0,25 2/3 + x : 3/7 = 4/15”

1. Giải đáp + Lời giải và giải thích chi tiết:

   5/2 – 3/2 : x = 0,25

   => 5/2 – 3/2 : x = 1/4

   => 3/2 : x = 5/2 – 1/4

   => 3/2 : x = 10/4 – 1/4

   => 3/2 : x = 9/4

   => x = 9/4 xx 3/2

   => x = 27/8

   Vậy x = 27/8

   2/3 + x : 3/7 = 4/15

   => x : 3/7 = 4/15 – 2/3

   =>  x : 3/7 = 4/15 – 10/15

   => x : 3/7 = -6/15

   => x : 3/7 = -2/5

   => x = -2/5 xx 3/7

   => x = -6/35

   Vậy x = -6/35

   Trả lời
2. 5/2 – 3/2 : x = 0,25

   => 3/2 : x = 5/2 – 0,25

   => 3/2 : x = 5/2 – 1/4

   => 3/2 : x = 10/4 – 1/4

    => 3/2 : x = 9/4

   => x = 3/2 : 9/4

   => x = 3/2 xx 4/9

   => x = 2/3

   Vậy x = 2/3

   ___________________________________________

   2/3 + x : 3/7 = 4/15

   => x : 3/7 = 4/15 – 2/3

   => x : 3/7 = 4/15 – 10/5

   => x : 3/7 = -6/15

   => x : 3/7 = -2/5

   => x = -2/5 xx 3/7

   => x = -6/35

   Vậy x = -6/35

   text{#maingoctranthi}

   Trả lời