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2x+3y/5y daca x/y=3/5
VA ROG URGENTT!!!!!

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Targoviste44

[tex]\it \dfrac{x}{y}=\dfrac{3}{5} \Rightarrow \dfrac{x}{y}=0,6 \Rightarrow x=0,6y\ \ \ \ \ \ (*)\\ \\ \\ \dfrac{2x+3y}{5y}\ \stackrel{(*)}{=}\ \dfrac{0,6y+3y}{5y}=\dfrac{3,6\not y}{5\not y}=\dfrac{3,6}{5}=0,72[/tex]

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