repejor vrg , si sa fie poza vrggg
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[tex]\frac{25x}{2y}=\frac{625}{100}\\
\\ \Rightarrow 2y \cdot 625=100 \cdot 25x \\
\\ y=\frac{100 \cdot 25x}{625 \cdot 2}\\
\\ y=\frac{50 \cdot 25x}{625}=\frac{2\cdot x}{1}\\
\\ y=2\cdot x \Rightarrow x/y=\frac{1}{2}[/tex]