8/3+5/4 -7/5
-1/12+5/24 - 7/8
-25/40+1/8-2/36
-1/36+4/72- 3/24
-5/17- 8/17
1- -1/3
-4-1/7
2/-5 - 1/7
-3/11- -9/11
-1- -1/3
-5/36+ 1/72
-3/11 - 7/22
20.(-7/5)
-5/33 . 11/20. 3/4
-8/29.58/24
35/(-48) .-24/42
-9/11.4/13.(-44/18)
Giúp mình với nhé:)))