ối dồi ôi

A

A

Tham khảo :

https://tranminhdung.vn/sus-la-gi/

2h45p

a) 4/5 + 1/10 = 8/10 + 1/10 = 9/10

b) 7/12 - 1/4 = 7/12 - 3/12 = 4/12 = 1/3

c) 5 x 4/15 = 5 x 4/15 = 20/15 = 4/3

d) 2/5 : 6/5 = 2/5 x 5/6 = 10/30 = 1/3

 Tam giác cân

2/3

?????????????????????????

 ét ô ét >3