Question

Từ 2.×=4.y Hãy suy ra 4 tỉ lệ thức

Answer 1

\(\dfrac{2}{4}=\dfrac{y}{x};\dfrac{2}{y}=\dfrac{4}{x};\dfrac{x}{4}=\dfrac{y}{2};\dfrac{x}{y}=\dfrac{4}{2}\)

Answer 2

\(\Rightarrow\left\{{}\begin{matrix}y=\dfrac{x}{2}\\\dfrac{x}{y}=\dfrac{1}{2}\\\dfrac{y}{x}=2\\x=2y\end{matrix}\right.\)

Answer 3

24=yx;2y=4x;x4=y2;xy=42