Question

Tìm Y

a) (y+1/5)*3/7=5/14

Answer 1

\(\left(y+\frac{1}{5}\right).\frac{3}{7}=\frac{5}{14}\)

\(\left(y+\frac{1}{5}\right)=\frac{5}{6}\)

\(y=\frac{5}{6}-\frac{1}{5}\)

\(y=\frac{19}{30}\)

Vậy \(y=\frac{19}{30}\)

Answer 2

\(\left(y+15\right).\frac{3}{7}=\frac{5}{14}\)
\(\Rightarrow y+15=\frac{5}{14}:\frac{3}{7}\)
\(\Rightarrow y+15=\frac{5}{6}\)
\(\Rightarrow y=\frac{5}{6}-15\)
\(\Rightarrow y=-\frac{85}{6}\)