\(\Rightarrow x\times\left(\frac{1}{2}+\frac{3}{2}\right)=\frac{4}{5}\)
\(\Rightarrow x\times\frac{4}{2}=\frac{4}{5}\)
\(\Rightarrow x\times2=\frac{4}{5}\)
\(\Rightarrow x=\frac{4}{5}\div2\)
\(\Rightarrow x=\frac{4}{5}\times\frac{1}{2}\)
\(\Rightarrow x=\frac{2}{5}\)
\(x\times\frac{1}{2}+\frac{3}{2}\times x=\frac{4}{5}\)
\(x\times\left(\frac{1}{2}+\frac{3}{2}\right)=\frac{4}{5}\)
\(x\times2=\frac{4}{5}\)
\(x=\frac{4}{5}:2\)
\(x=\frac{2}{5}\)
\(x\times\frac{1}{2}+\frac{3}{2}\times x=\frac{4}{5}\)
\(x\times\left(\frac{1}{2}+\frac{3}{2}\right)=\frac{4}{5}\)
\(x\times2=\frac{4}{5}\)
\(x=\frac{4}{5}\div2\)
\(x=\frac{2}{5}\)
Kết bạn vs mình nha!
\(\frac{x}{2}+\frac{3.x}{2}=\frac{4}{5}\Leftrightarrow\frac{4.x}{2}=\frac{4}{5}\Leftrightarrow\frac{x}{2}=\frac{1}{5}\Leftrightarrow x=\frac{2.1}{5}=\frac{2}{5}\)
\(\chi\)\(\times\)\(\frac{1}{2}\)\(+\)\(\frac{3}{2}\)\(\times\)\(\chi\)\(=\)\(\frac{4}{5}\)
\(\chi\)\(\times\)( \(\frac{1}{2}\)\(+\)\(\frac{3}{2}\))\(=\)\(\frac{4}{5}\)
\(\chi\)\(\times\) \(2\) \(=\)\(\frac{4}{5}\)
\(\chi\) \(=\)\(\frac{4}{5}\)\(\div\)\(2\)
\(\chi\) \(=\)\(\frac{2}{5}\)
Vậy \(\chi\)\(=\)\(\frac{2}{5}\)
