Question

3x7/10+7/10x5+2x14/20

Answer 1

cứu

 

Answer 2

`3 xx 7/10 + 7/10 xx 5 + 2 xx 14/20`

`= 3 xx 7/10 + 7/10 xx 5 + 2 xx 7/10`

`= (3+5+2) xx 7/10`

`= 10 xx 7/10`

`= 70/10`

`=7`