a, 5.(1/5-x) – 1/9 = -1/9 b, 2+1/6-x=10.0,1-5/6

2 bình luận về “a, 5.(1/5-x) – 1/9 = -1/9 b, 2+1/6-x=10.0,1-5/6”

1. a.  5(1/5 – x) – 1/9 = -1/9

   5(1/5 – x) = -1/9 + 1/9

   5(1/5 – x) = 0

   1/5 – x = 0 : 5

   1/5 – x = 0

   x = 1/5 – 0

   x = 1/5

   b. 2 + 1/6 – x = 10 . 0,1 – 5/6

   12/6 + 1/6 – x = 1 – 5/6

   13/6 – x = 1/6

   x = 13/6 – 1/6

   x = 12/6

   x = 2

   Đáp số : a)x=1/5

   b)x=2

   Trả lời
2. a) 5(1/5 – x) – 1/9 = -1/9

   => 5(1/5 – x) = -1/9 + 1/9

   => 5(1/5 – x) = 0

   => 1/5 – x = 0 : 5

   => 1/5 – x = 0

   => x = 1/5 – 0

   => x = 1/5

   Vậy x = 1/5

   b) 2 + 1/6 – x = 10 . 0,1 – 5/6

   => 12/6 + 1/6 – x = 1 – 5/6

   => 13/6 – x = 1/6

   => x = 13/6 – 1/6

   => x = 12/6

   => x = 2

   Vậy x = 2

    

   Trả lời