![](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)
\(\frac{x}{7}=\frac{x+16}{35}\)
\(\Leftrightarrow x\cdot35=7\left(x+16\right)\)
\(\Leftrightarrow35x=7x+112\)
\(\Leftrightarrow35x-7x=112\)
\(\Leftrightarrow28x=112\)
\(\Leftrightarrow x=4\)
Vậy x = 4
\(\frac{8}{x}=\frac{7}{x-16}\)
\(\Leftrightarrow8\left(x-16\right)=x\cdot7\)
\(\Leftrightarrow8x-128=7x\)
\(\Leftrightarrow8x-7x=128\)
\(\Leftrightarrow x=128\)
Vậy x = 128
a,\(\frac{x}{7}=\frac{x+16}{35}< =>\frac{5x}{35}=\frac{x+16}{35}\)
\(< =>5x=x+16\)
\(< =>4x=16< =>x=4\)
b,\(\frac{8}{x}=\frac{7}{x-16}\)\(< =>8x-128=7x\)
\(< =>x=128\)
![](https://rs.olm.vn/images/avt/0.png?1311)
=>16/35=x-x/7
=>16/35=7x-x/7
6x/7=16/35
=>30x/35=16/35
=>30x=16
x=8/15
Ai h mk mk se h lai
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{x}{7}=\frac{x+16}{35}\)
\(\frac{5\times x}{5\times7}=\frac{x+16}{35}\)
\(\frac{5\times x}{35}=\frac{x+16}{35}\)
\(\Rightarrow5\times x-x=16\)
\(4\times x=16\)
\(x=16:4\)
\(x=4\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\Rightarrow x+\frac{x}{7}=\frac{16}{35}\)
Qui đồng mẫu lên rồi tìm nha bạn !
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{x}{7}=\frac{x+16}{35}\)
<=> 7(x+16)=35x
=> x+16 = 5x
=>16 = 5x - x = 4x
=> x = 16 : 4
=> x = 4
\(\Rightarrow x-\frac{x}{7}=\frac{16}{35}\)
\(\Rightarrow\frac{35x}{35}-\frac{5x}{35}=\frac{16}{35}\)
=> 35x - 5x = 16
=> x.(35 - 5) = 16
=> x.30 = 16
=> x = 16 : 30
=> x = \(\frac{8}{15}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Trả lời
\(\frac{x}{7}=\frac{x-16}{35}\)
\(\Leftrightarrow35x=7.\left(x-16\right)\)
\(\Leftrightarrow35x=7x-112\)
\(\Leftrightarrow28x=-112\)
\(\Leftrightarrow x=-4\)
Vậy \(x=-4\)
\(\frac{x}{7}=\frac{\left(x+16\right)}{35}\)
\(\Rightarrow\) 35x = 7.( x + 16 )
\(\Leftrightarrow\) 35x = 7x + 112
\(\Leftrightarrow\) 28x = 112
\(\Leftrightarrow\) x = 4
Vậy x = 4
\(\frac{x}{7}=\frac{\left(x+16\right)}{35}\)
--> 35.x = 7.(x+16)
--> 35.x = 7.x + 112
--> 28.x = 112
--> x = 4
Vậy x = 4
~ Học tốt ~