Question

[bhgnbg]

tính giá trị biểu thức sau (3 5/6-1 1/3)*(3 14/15-2 3/5)

Answer 1

[Chuu]

`(3 5/6 - 1 1/3) . ( 3 14/15 - 2 3/5)`

`= ( 23/6 - 4/3) . (59/15 - 13/5)`

`= ( 23/6 - 8/6) . (59/15 - 39/15)`

`=((23-8)/6) . ((59-39)/15)`

`= 15/6 . 20/15`

`=5/2 . 4/3`

`=(5.4)/(2.3)`

`=20/6`

`=10/3`