\(\hept{\begin{cases}\frac{x}{3}=\frac{y}{2}\\\frac{y}{3}=\frac{z}{4}\end{cases}\Rightarrow\hept{\begin{cases}\frac{x}{9}=\frac{y}{6}\\\frac{y}{6}=\frac{z}{8}\end{cases}}}\)
\(\Rightarrow\frac{x}{9}=\frac{y}{6}=\frac{z}{8}\)
Áp dụng t/c dãy tỉ số bằng nhau:
\(\frac{x}{9}=\frac{y}{6}=\frac{z}{8}=\frac{x+y+z}{9+6+8}=\frac{46}{23}=2\)
\(\Rightarrow\hept{\begin{cases}x=18\\y=12\\z=16\end{cases}}\)
\(\frac{x}{3}=\frac{y}{2};\frac{y}{3}=\frac{z}{4}=\frac{x}{9}=\frac{y}{6};\frac{y}{6}=\frac{z}{8}=\frac{x}{9}=\frac{y}{6}=\frac{z}{8}\)
Ta có:
\(\frac{x}{9}=\frac{y}{6}=\frac{z}{8}=\frac{x+y+z}{9+6+8}=\frac{46}{23}=2\)
\(\Rightarrow\frac{x}{9}=2\Rightarrow x=2.9\Rightarrow x=18\)
\(\Rightarrow\frac{y}{6}=2\Rightarrow y=2.6\Rightarrow y=12\)
\(\Rightarrow\frac{z}{8}=2\Rightarrow z=2.8\Rightarrow z=16\)
Vậy.................................................
Ta có: \(\frac{x}{3}=\frac{y}{2}\Rightarrow\frac{x}{9}=\frac{y}{6}\)
\(\frac{y}{3}=\frac{z}{4}\Rightarrow\frac{y}{6}=\frac{z}{8}\)
\(\Rightarrow\frac{x}{9}=\frac{y}{6}=\frac{z}{8}\)
Áp dụng tính chất của dãy tỉ số bằng nhau ta có:
\(\frac{x}{9}=\frac{y}{6}=\frac{z}{8}=\frac{x+y+z}{9+6+8}=\frac{46}{23}=2\)
\(\Rightarrow\frac{x}{9}=2\Rightarrow x=2.9=18\)
\(\Rightarrow\frac{y}{6}=2\Rightarrow y=2.6=12\)
\(\Rightarrow\frac{z}{8}=2\Rightarrow z=2.8=16\)
Vậy x = 18; y = 12; z = 16
Chúc bạn học tốt !
