1800 chia 30
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![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(x:\left[\left(1800+600\right):30\right]=560:\left(315-35\right)\)
\(x:\left[2400:30\right]=560:280\)
\(x:80=2\)
\(x=2\times80\)
\(x=160\)
![](https://rs.olm.vn/images/avt/0.png?1311)
x : [ ( 1800 + 1600 ) : 30 ] = 560 : ( 315 - 35 )
x : [ 3400 : 30 ] = 560 : 280
x : 113,3333 = 2
x = 2 x 113,3333
x = 226,6666
X:[(1800 + 1600):30]=560 : (315 - 35)
X:[(1800 + 1600):30]=560 : 280
X:[(1800 + 1600):30]=2
X:(1800 + 1600) =2x30
X:(1800 + 1600) = 60
X: 3400 = 60
X = 60x3400
X = 204000
![](https://rs.olm.vn/images/avt/0.png?1311)
x:[(1800+600):30]=560:(315-35)
x : (2400 : 30) = 560 : 280
x : 80 = 2
x= 160
x : [ ( 1800 + 600 ) : 30 ] = 560 : ( 315 - 35 )
x : ( 2400 : 30 ) = 560 : 280
x : 80 = 2
x = 2 x 80
x = 160
Vậy x = 160
![](https://rs.olm.vn/images/avt/0.png?1311)
x:[(1800+600):30]=560:(315-15)
=> x:[2400:30]=560:300
=> x: 80 = 560:300
=> x = (80 x 560): 300
=> x = 448/3 = 149,(3)
![](https://rs.olm.vn/images/avt/0.png?1311)
Đề bạn có 1 chút sai nên mình sửa lại nha!
Ta có: \(\text{x : [ ( 1800 + 600 ) : 30 ] = 560 : ( 315 - 35 ) }\)
\(\Rightarrow\text{x : [ 2400 : 30 ]=560:280}\)
\(\Rightarrow\text{x : 80=2}\)
\(\Rightarrow\text{x=2.80}\)
\(\Rightarrow\text{x=160}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
x : [(1800 + 600) : 30] = 560 : (315 - 35)
x : (2400 : 30) = 560 : 280
x : 80 = 2
x = 2 x 8 0
x = 160
![](https://rs.olm.vn/images/avt/0.png?1311)
x : [(1800 + 600) : 30 ] = 560 : ( 315 - 35 )
x : [(1800 + 600) : 30 ] = 2
x : 80 =2
x =2 x 80
x =160
bang 60 nha bn
=60 nhé