![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{3.4+3}{6.5+9}=\frac{3.(4+1)}{3.10.3.3}=\frac{3.5}{3.(10+3)}=\frac{3.5}{3.13}=\frac{5}{14}\)
\(\frac{6 . 9 - 2.17}{63 . 3 - 119}=\frac{3 . ( 17 + 1 )-2 . 17}{189 - 119}\)
\(=\frac{3.17+3-2.17}{70}=\frac{\left(3-2\right).17+3}{70}\)
\(=\frac{17+3}{70}=\frac{20}{70}=\frac{2}{7}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
1-212121/353535=141414/353535=10101/353535
1-131313/141414=10101/141414
Vì
10101/141414>10101/353535
Nên
212121/353535>131313/141414
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
212121/353535=212121:10101/353535:10101=21/35=3/5
131313/141414=131313:10101/141414:10101=13/14
3/5=3x14/5x14=42/70=3/5
13/14=13x5/14x5=65/72=13/14
![](https://rs.olm.vn/images/avt/0.png?1311)
Trả lời
Bài 1:
-5/80;7/16;-9/20
-5/80=-5/80
7/16=35/80
-9/20=-36/80
Bài 2:
-54/90=-6/10=-3/5=-216/360
-180/288=-20/32=-5/8=-225/360
60/-135=-12/27=-4/9=160/380
13/55=949/4015
47/73=2585/4015
949<2585
Suy ra 13/55<47/73