2/5x+ 3/5x = 3/4 1/2x -2/3x – x = 1/3

2 bình luận về “2/5x+ 3/5x = 3/4 1/2x -2/3x – x = 1/3”

1. Giải đáp:

   2/5 x + 3/5 x = 3/4

   x . (2/5 + 3/5) = 3/4

   x . 1 = 3/4

   x = 3/4 : 1

   x = 3/4

   Vậy x = 3/4

   1/2 x – 2/3 x – x = 1/3

   1/2 x – 2/3 x – 1x = 1/3

   x . (1/2 – 2/3 – 1) = 1/3

   x . (-7/6) = 1/3

   x = 1/3 : (-7/6)

   x= 1/3 . (-6/7)

   x= -2/7

   Vậy x=-2/7

    

   Trả lời
2. #wdr

   2/5 x + 3/5 x =3/4

   x.(2/5 +3/5)=3/4

   x=3/4

   —-

   1/2 x – 2/3 x -x=1/3

   x.(1/2 -2/3 -1)=1/3

   x.(3/6-4/6-6/6)=1/3

   x.(-7/6) =1/3

   x= 1/3 : (-7/6)

   x= 1/3 . (-6/7)

   x= -2/7

    

   Trả lời