![](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)
3,54 x 73 + 0,23 x 25 + 3,54 x 27 + 0,17 x 25
= 3,54 x 73 + 3,54 x 27 + 0,23 x 25 + 0,17 x 25
= 3, 54 x (73 + 27) + 25 x (0,17+ 0,23)
= 3,54 x 100 + 25 x 0,4
= 354 + 10
= 364
![](https://rs.olm.vn/images/avt/0.png?1311)
35,5 : 0,125 + 35,5 x 2
= 35,5 x 8 + 35,5 x 2
= 35,5 x (8+2)
= 35,5 x 10
= 355
25,5 : 0,5 + 25,5 x 8
= 25,5 x 2 + 25,5 x 8
= 25,5 x (2+8)
= 25,5 x 10
= 255
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có: 35,5:x-25:2,5:x=15
\(\Rightarrow35,5:x-10:x=15\)
\(\Rightarrow\left(35,5-10\right):x=15\)
\(\Rightarrow25,5:x=15\)
\(\)\(\Rightarrow x=25,5:15\)
\(\Rightarrow x=1,7\)
Vậy x=1,7
![](https://rs.olm.vn/images/avt/0.png?1311)
cách 1
25x36=25x4x9=100x9=900
67x101=67x100x1,01=6700x1,01=6767
cách 2
25x36=25x(40-4)=25x40-25x4=1000-100=900
67x101=67x(100+1)=67x100+67x1=6700+67=6767
![](https://rs.olm.vn/images/avt/0.png?1311)
6 2/7 + 7 3/5 + 8 6/9 + 9 1/4 + 2/5 + 5/7 + 1/3 x 3/4 + 1967
= 44/7 + 38/5 + 78/9 + 37/4 + 2/5 + 5/7 + 1/3 + 1967
= ( 44/7 + 5/7 ) + ( 38/5 + 2/5 ) + ( 26/3 + 1/3 ) + ( 37/4 + 3/4 ) +1967
= 7 + 8 + 9 + 10 + 1967
= 15 + 9 + 10 + 1967
= 24 + 10 + 1967
= 34 + 1967
= 2001
85,5
85,5