T
tranviettien1995


Mọi người giúp em bài này với:
$\left\{ _{\frac{z}{x+y}=\frac{4}{3}}^{\frac{z}{x}+\frac{z}{y}=6} \right.$
[
$\left\{ _{\frac{z}{x+y}=\frac{4}{3}}^{\frac{z}{x}+\frac{z}{y}=6} \right.$
][/
$\left\{ _{\frac{z}{x+y}=\frac{4}{3}}^{\frac{z}{x}+\frac{z}{y}=6} \right.$
]
$\left\{ _{\frac{z}{x+y}=\frac{4}{3}}^{\frac{z}{x}+\frac{z}{y}=6} \right.$
[
$\left\{ _{\frac{z}{x+y}=\frac{4}{3}}^{\frac{z}{x}+\frac{z}{y}=6} \right.$
][/
$\left\{ _{\frac{z}{x+y}=\frac{4}{3}}^{\frac{z}{x}+\frac{z}{y}=6} \right.$
]