a) 4/9 + 1/4 = 16/36 + 9/36 = 25/36

b) 1/3 . (-4/5 + -1/5) 

= 1/3 . -1

= -1/3

c) 1/5 - [1/4 - 1/4]

= 1/5 

l căn x - 1 l = 1 + 3 = 4

l căn x l = 4 + 1 = 5

Căn x bằng 5 vậy x bằng 25

Tiển lãi một tháng là: (2062400 - 2000000) : 6 = 10400 (đồng)

Lãi suất hàng tháng là: 10400.100% : 2000000 = 0,52%

a) m < n vì m < 6 < n

b) y < z vì y < 6 < z

a) A = 6. ( 3.2 - 1/3) + 2

       = 6. ( 6 - 1/3) + 2

       = 6. 17/3 + 2

       = 34 + 2

       = 36

b) B = 1/3 + 1/4

        = 4/12 + 3/12

        = 7/12

c) C = ( 1/3 + 5/6 - 7/9) : 21/18

        = ( 6/18 + 15/18 - 14/18) : 21/18

        = 7/18 . 18/21

        = 7/21 = 1/3

d) 2/5 + 1,2 - 16 

  = -72/5

The Tom and Jerry is a cartoon movie about Tom and Jerry. The star are Tom and Jerry.  They attacking each other

 Tom is a blue cat who chasing Jerry everyday. Jerry is very destructive. 

The acting is really good, it has a lot of exciting action, and the story is really dramatic.

Overall, I think this movie is great. If you like cartoon movies, then you will love it.

              Chu vi hình chữ nhật là: (5,5 + 3,75) . 2 = 18,5 (m)

             Số khóm hoa cần trồng là: 18,5 : 1/4 - 4 = 70 (khóm hoa)

a) 4/5 : x = 3/4 - 1/5

4/5 : x = 11/20

        x = 4/5 : 11/20

        x = 16/11

b) 2x = 1  - 1/2

     2x = 1/2

        x = 1/4

a) 2/3 . (5/4 - 3/4)

= 2/3 . 2/4

= 2/3 . 1/2

= 1/3

b) 2 . (9/4) - 7/2

= 18/4 - 7/2

= 1

c) -3/4 . ₅3/13 - 3/4 . 36/13

= -3/4 . ( 68/13 + 36/13 )

= -3/4 . 8

= -6

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