Question

tìm y biết

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

 

Answer 1

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

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

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

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

Answer 2

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

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

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

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

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

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

Vậy \(y=\frac{6}{7}\)

Answer 3

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

\(\Rightarrow3y+y\times\frac{1}{2}+y\times\frac{1}{4}=\frac{3}{2}\)

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

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

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

Vậy \(y=\frac{2}{5}\)

Answer 4

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

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

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

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

\(y=\frac{2}{5}\)