![](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)
\(\frac{3}{4}.\frac{12}{7}+x=\frac{5}{2}\)
\(\frac{3.3}{1.7}+x=\frac{5}{2}\)
\(\frac{9}{7}+x=\frac{5}{2}\)
\(x=\frac{5}{2}-\frac{9}{7}\)
\(x=\frac{35}{14}-\frac{18}{14}\)
\(x=\frac{17}{14}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(x+x\times60\%+x=23\)
\(x\times\left(1+\frac{3}{5}+1\right)=23\)
\(x\times\frac{13}{5}=23\)
\(x=23:\frac{13}{5}\)
\(x=\frac{115}{13}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{7}{4}-x.\frac{3}{4}=\frac{5}{19}\)
\(\Rightarrow1+\frac{3}{4}-x.\frac{3}{4}=\frac{5}{9}\)
\(\Rightarrow\frac{3}{4}.\left(1-x\right)=\frac{5}{9}-1=-\frac{4}{9}\)
\(\Rightarrow1-x=-\frac{4}{9}:\frac{3}{4}=-\frac{16}{27}\)
\(\Rightarrow x=1-\left(-\frac{16}{27}\right)=1+\frac{16}{27}=1\frac{16}{27}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
15/19 x 38/5 < X < 67/15 + 56/15
6/1 < X < 41/5
Quy đồng 6/1 ta có 30/5
Vậy X là 31/5 ; 32/5 ; 34/5 ; 35/5 ; 36/5 ; 37/5 ;38/5 ;39/5 ;40/5
![](https://rs.olm.vn/images/avt/0.png?1311)
\(x:0,25+86\cdot x+x:0,1=82,4\)
\(x\cdot4+86\cdot x+x\cdot10=82,4\)
\(x\left(4+86+10\right)=82,4\)
\(x\cdot100=82,4\\ x=82,4:100\\ x=0,824\)
![](https://rs.olm.vn/images/avt/0.png?1311)
X x 6,35 + X x 3,65 = 30
X x ( 6,35 + 3,65 ) = 30
X x 10 = 30
X = 30 : 10
X = 3
x(6,35+3.65)=30
x10=30=>x=3
bài viết kiểu gì vậy khó hiểu quá