Răspuns :
Inmultesti pe diagonala si egalezi:
[tex] \frac{x-y}{y} = \frac{3}{4} =\ \textgreater \ 4x=7y[/tex]
[tex] \frac{2x+y}{y}= \frac{73}{15} =\ \textgreater \ 30x=58y[/tex]
[tex] \frac{x-y}{y} = \frac{3}{4} =\ \textgreater \ 4x=7y[/tex]
[tex] \frac{2x+y}{y}= \frac{73}{15} =\ \textgreater \ 30x=58y[/tex]
\frac{x-y}{y} = \frac{3}{4} =\ \textgreater \ 4x=7y
\frac{2x+y}{y}= \frac{73}{15} =\ \textgreater \ 30x=58y