Question

[Khanh Le]

các bnn giải hộ mk vs, thanks nha=333

Answer 1

[Đoàn Thanh Hiền]

\(a.\frac{x}{3}=\frac{y}{6}=\frac{x+y}{3+6}=\frac{90}{9}=10\)

\(\Leftrightarrow\frac{x}{3}=10\Leftrightarrow x=10.3=30\)

\(\Leftrightarrow\frac{y}{6}=10\Rightarrow y=6.10=60\)

vậy x=30 , y=60y

\(b.\frac{x}{2}=\frac{y}{5}=\frac{2x}{4}=\frac{y}{5}=\frac{2x-y}{4-5}=\frac{3}{1}\)

\(\Leftrightarrow\frac{x}{2}=3\Leftrightarrow x=3.2=6\)

\(\Leftrightarrow\frac{y}{5}=3\Leftrightarrow y=5.3=15\)

c guess nhé