Question

Tính:

2/15+7/5=

3/5*8/11=

4-13/4=

2:1/3=

Answer 1

`2/15 + 7/5 = 2/15 + 21/15 = 23/15`

`3/5 xx 8/11 = 24/55`

`4- 13/4 = 16/4 - 13/4 = 3/4`

`2: 1/3 = 2xx3=6`

Answer 2

= 9/15

= 24/55

= -9/4

= 6

Answer 3

`2/15 + 7/5 = 2/15 + 21/15 = 23/15`

`3/5 xx 8/11 = (3xx8)/(5xx11) = 24/55`

`4 - 13/4 = 16/4 - 13/4 = 3/4`

`2 : 1/3 = 2 xx 3 = 6`

Answer 4

`2/15+7/5=2/15+21/15=23/15`

`3/5xx8/11=(3xx8)/(5xx11)=24/55`

`4-13/4=16/4-13/4=3/4`

`2:1/3=2xx3/1=6`

Answer 5