Ta có:
2011/2015+4/2015=2015/2015=1
101/105+4/105=105/105=1
Vì 4/2015<4/105
Nên 2011/2015>101/105
Vậy 2011/2015>101/105
mk chắc đúng đấy bn nhé
tk cho mk nha, cảm ơn bn nhìu
1) so sanh cac phan so sau :
2017/2015 va 31/29
so sanh cac so sau
a= 1+2+2^2+2^3+...+2^180 va b = 2 ^101
1 .so sanh cac phan so sau day :
2014/2013 va 2015/2014
530/570 va 531/571
2 . a/b sau khi rut gon duoc c/d nguoi ta chung to rang :
a/b=a+c/b+d
So sanh cac phan so sau
a) -403/407 va -813/817
b)-251/318 va -317/171
So sanh: 2011/2013+2013/2015+2015/2017+2017/2011 va 4
cho 2 phan so 4/4 va 6/7 tu 2 phan so da cho lap 1 phan so thu ba bang cach ;tu so la tong cac tu so cua 2 phan so da cho ,mau so la tong cac mau so da cho.Hay so sanh ba phan so do voi nhau va xep chung theo thu tu tang dan
so sanh cac phan so sau (10^2008)+1-(10^2009)+1 va (10^2009)+1/(10^2010)+1
So sanh cac phan so sau
a)3/124;1/41;5/207;2/83
b)134/43;55/21;74/19;116/37
c)16/9;24/13
Ko quy dong va so sanh cac ban giup minh voi
so sanh cac phan so sau: 10^6+1/10^5+1 va 10^7+1/10^6+1
