Question

[Pé Mon]

giá trị biểu thức thích hợp để y : 

                                              y + 1 / 3 = 7 / 15 : 2 / 5

zúp tui. thanks

Answer 1

[Kiệt Nguyễn]

\(y+\frac{1}{3}=\frac{7}{15}\div\frac{2}{5}\)

\(\Leftrightarrow y+\frac{1}{3}=\frac{7}{15}\times\frac{5}{2}\)

\(\Leftrightarrow y+\frac{2}{6}=\frac{7}{6}\)

\(\Leftrightarrow y=\frac{7}{6}-\frac{2}{6}\)

\(\Leftrightarrow y=\frac{5}{6}\)

Answer 2

[_Nhạt_]

\(y+\frac{1}{3}=\frac{7}{15}:\frac{2}{5}\)

\(y+\frac{1}{3}=\frac{7}{15}\times\frac{5}{2}\)

\(y+\frac{1}{3}=\frac{7}{6}\)

\(y=\frac{7}{6}-\frac{1}{3}\)

\(\Rightarrow y=\frac{5}{6}\)