![](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)
`x xx1/4+x xx1/3=2`
`=> x xx (1/4+1/3)=2`
`=> x xx (3/12+4/12)=2`
`=> x xx 7/12=2`
`=> x=2:7/12`
`=>x=2xx12/7`
`=>x=24/7`
![](https://rs.olm.vn/images/avt/0.png?1311)
1.8100
2. 34 x 18 + 18 x 66
= 18 x ( 34 + 66)
= 18 x 100 = 1800
3. X × ( 8 + 12) = 160 + 20 × 12
= X x 20 = 160 + 240
= X x 20 = 400
X = 400 : 20 = 20
4. X x 12 - X x 2 = 2020
(12 - 2) x X = 2020
10 x X = 2020
X = 2020 : 10 = 202
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
( 1/2 + x ) x 3/4 = 2/3
1/2 + x = 2/3 : 3/4
1/2 + x = 8/9
x = 8/9 - 1/2
x = 7/18
\(\left(\dfrac{1}{2}+x\right)\times\dfrac{3}{4}=\dfrac{2}{3}\)
\(\Leftrightarrow\dfrac{1}{2}+x=\dfrac{2}{3}:\dfrac{3}{4}\)
\(\Leftrightarrow\dfrac{1}{2}+x=\dfrac{8}{9}\)
\(\Leftrightarrow x=\dfrac{8}{9}-\dfrac{1}{2}\)
\(\Leftrightarrow x=\dfrac{7}{18}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
a, x+4/7=7/4-1/4
x + 4/7 = 6/4
x = 6/4 - 4/7
x = 26/28
b, 9/2+(x-3/4)=25/4
x - 3/4 = 25/4 - 9/2
x - 3/4 = 7/4
x = 7/4 + 3/4
x = 10/4
a, x+4/7=7/4-1/4
x+4/7= 3/2
x = 3/2-4/7= 13/14
b,9/2+(x-3/4)=25/4
x-3/4 = 25/4 - 9/2 = 7/4
x= 7/4 + 3/4 = 5/2
\(x:\frac{1}{2}=4\)
\(x=4\times\frac{1}{2}\)
\(x=2\)
= 4/2 = 1/2