Question

Tính giá trị biểu thức: a. 5/6 + 1/3 * 2

b. 9/11 : (6/7 - 5/6)

ai cứu em với huhu gấp lắm rùi

 

Answer 1

a. 5/6+1/3*2

= 5/6+2/3

= 5/6+4/6

= 10/6

= 5/3

Answer 2

`a, 5/6 + 1/3 xx 2`

`= 5/6 + 2/3`

`= 5/6 + 4/6`

`=9/6`

`=3/2`

`b, 9/11 : (6/7 - 5/6)`

`= 9/11 : ( 36/42 - 35/42)`

`= 9/11 : 1/42`

`=9/11 xx42`

`=378/11`

Answer 3

 b.9/11:(6/7-5/6)

= 9/11:(36/42-35/42)

= 9/11:1/42

= 9/11*42

= 378/11