\(\dfrac{x}{3}=\dfrac{y}{4}=\dfrac{z}{2};x^2+y^2=100\)
\(\dfrac{x}{7}=\dfrac{y}{4}=\dfrac{z}{2};x-3x=9\)
Loga
Toán lớp 7
\(\dfrac{x}{3}=\dfrac{y}{4}=\dfrac{z}{2};x^2+y^2=100\)
\(\dfrac{x}{7}=\dfrac{y}{4}=\dfrac{z}{2};x-3x=9\)
