Question

[Nguyễn Tường Thành]

tìm y biết

\(y\cdot3+\frac{y}{2}+\frac{y}{4}=\frac{3}{2}\)

Answer 1

[Dũng Lê Trí]

\(\frac{y\cdot3}{1}+\frac{y}{2}+\frac{y}{4}=\frac{3}{2}\)

\(y\cdot\left(3+\frac{1}{2}+\frac{1}{4}\right)=\frac{3}{2}\)

\(y\cdot\frac{15}{4}=\frac{3}{2}\)

\(y=\frac{3}{2}:\frac{15}{4}=\frac{2}{5}\)

Answer 2

[Kaori Miyazono]

\(y.3+\frac{y}{2}+\frac{y}{4}=\frac{3}{2}\)

=>\(y.\left(1+\frac{1}{2}+\frac{1}{4}\right)=\frac{3}{2}\)

=>\(y.\frac{7}{4}=\frac{3}{2}\)

=>\(y=\frac{3}{2}:\frac{7}{4}\)

=>\(y=\frac{3}{2}.\frac{4}{7}\)

=>\(y=\frac{6}{7}\)

Vậy \(y=\frac{6}{7}\)