\(\left(y-\frac{2}{5}\right):\frac{4}{3}=\frac{3}{8}\)
\(y-\frac{2}{5}=\frac{3}{8}.\frac{4}{3}\)
\(y-\frac{2}{5}=\frac{1}{2}\)
\(y=\frac{1}{2}+\frac{2}{5}\)
\(\Rightarrow y=\frac{9}{10}\)
\(y.\frac{5}{6}=\frac{1}{4}+\frac{1}{3}\)
\(y.\frac{5}{6}=\frac{7}{12}\)
\(y=\frac{7}{12}:\frac{5}{6}\)
\(y=\frac{7}{12}.\frac{6}{5}\)
\(\Rightarrow y=\frac{7}{10}\)
a ) \(\left(y-\frac{2}{5}\right):\frac{4}{3}=\frac{3}{8}\)
\(\left(y-\frac{2}{5}\right)=\frac{3}{8}\times\frac{4}{3}\)
\(y-\frac{2}{5}=\frac{1}{2}\)
\(y=\frac{1}{2}+\frac{2}{5}\)
\(y=\frac{5}{10}+\frac{4}{10}\)
\(y=\frac{9}{10}\)
Vậy \(y=\frac{9}{10}\)
b ) \(y\times\frac{5}{6}=\frac{1}{4}+\frac{1}{3}\)
\(y\times\frac{5}{6}=\frac{3}{12}+\frac{4}{12}\)
\(y\times\frac{5}{6}=\frac{7}{12}\)
\(y=\frac{7}{12}:\frac{5}{6}\)
\(y=\frac{7}{12}\times\frac{6}{5}\)
\(y=\frac{7}{10}\)
Vậy \(y=\frac{7}{10}\)
Chúc bạn học tốt !!!
