Question

0,3+y-25%*y=1/2

mn giúp mk nha

Answer 1

\(0,3+y-25\%\times y=\frac{1}{2}\)

\(\Leftrightarrow\frac{3}{10}+y-\frac{1}{4}y=\frac{1}{2}\)

\(\Leftrightarrow\frac{3}{10}+\frac{3}{4}y=\frac{1}{2}\)

\(\Leftrightarrow\frac{3}{4}y=\frac{1}{5}\)

\(\Leftrightarrow y=\frac{4}{15}\)

Answer 2

1,7 ban a mk tinh may tinh doang hoan do