1+25/9 2+21/2 10+5/9

2 câu trả lời

1+25/9=9/9+25/9=9+25/9=34/9

2+21/2=4/2+21/2=21+4/2=25/2

10+=90/9+5/9=90+5/9=95/9

`1 + 25/9 = 9/9 + 25/9 = (9 + 25)/9 = 34/9`

`2 + 21/2 = 4/2 + 21/2 = (4 + 21)/2 = 25/2`

`10 + 5/9 = 90/9 + 5/9 = (90 + 5)/9 = 95/9`

`#dtkc`