![](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)
(11+99)+(22+88)+(33+77)+(44+66)+(55+55)=110+110+110+110+110=550
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\dfrac{13}{2}\)=\(\dfrac{65}{10}\)
\(\dfrac{4}{5}\)=\(\dfrac{8}{10}\)
\(\dfrac{22}{55}\)=\(\dfrac{4}{10}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Câu 2:
\(\dfrac{7}{9}\cdot\dfrac{3}{35}=\dfrac{1}{5}\cdot\dfrac{1}{3}=\dfrac{1}{15}\)
\(\dfrac{9}{22}\cdot55=\dfrac{9\cdot55}{22}=\dfrac{9\cdot5}{2}=\dfrac{45}{2}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
1=11 2=22 3=33 4=44 5=55 6=66 7=77 8=88 .... 11=1
như đề bài cho
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\dfrac{7}{9}\cdot\dfrac{3}{35}=\dfrac{7}{3\cdot3}\cdot\dfrac{3}{7\cdot5}=\dfrac{1}{15}\)
\(\dfrac{9}{22}\cdot55=\dfrac{9}{11\cdot2}\cdot11\cdot5=\dfrac{45}{2}\)
\(\dfrac{11}{17}:\dfrac{33}{34}=\dfrac{11}{17}\cdot\dfrac{34}{33}=\dfrac{11\cdot17\cdot2}{17\cdot11\cdot3}=\dfrac{2}{3}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
25 phút 32 giây : 4 + 4 phút 22 giây
= 6 phút 23 giây + 4 phút 22 giây
= 10 phút 45 giây
10 phút 45 giây > 9 phút 55 giây
25 phút 32 giây:4 + 4 phút 22 giây > 9 phút 55 giây
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{55}{22}+\frac{44}{22}\)
\(=\frac{55+44}{22}\)
\(=\frac{99}{22}\)
~~~~~~~~~~~~~~~
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{9}{22}x55=\frac{9x55}{22}=\frac{495}{22}\frac{45}{2}\)
k mình nhé các bạn
55+55-22:3/4
=55+55-88/3
=110-88/3
=242/3