\(x\times2+x\times\frac{1}{5}=1\frac{3}{5}\)
\(x\times\left(2+\frac{1}{5}\right)=\frac{8}{5}\)
\(x\times\frac{11}{5}=\frac{8}{5}\)
\(x=\frac{8}{5}\div\frac{11}{5}\)
\(x=\frac{8}{11}\)
\(\Rightarrow x.\left(2+\frac{1}{5}\right)=\frac{8}{5}\)
\(\Rightarrow\frac{11}{5}x=\frac{8}{5}\)
\(\Rightarrow x=\frac{8}{11}\)
Bài làm :
Ta có :
\(x\times2+x\times\frac{1}{5}=1\frac{3}{5}\)
\(\Leftrightarrow x\times\left(2+\frac{1}{5}\right)=\frac{8}{5}\)
\(\Leftrightarrow x\times\frac{11}{5}=\frac{8}{5}\)
\(\Leftrightarrow x=\frac{8}{5}\div\frac{11}{5}\)
\(\Leftrightarrow x=\frac{8}{11}\)
Vậy x=8/11
\(x×2+x×\frac{1}{5}=1\frac{3}{5}\)
\(x×2+x×\frac{1}{5}=\frac{8}{5} \)
\(x×\left(2+\frac{1}{5}\right)=\frac{8}{5}\)
\(x×\frac{11}{5}=\frac{8}{5}\)
\(x=\frac{8}{5}:\frac{11}{5}\)
\(x=\frac{8}{11}\)
vậy \(x=\frac{8}{11}\)