Question

Sa se afle x si y daca 3x-y=12 si x supra 4= 3 supra 5

Answer 1

[tex]3x-y=12\\ \frac{x}{4} = \frac{3}{5}=\ \textgreater \ x= \frac{4*3}{5}=\ \textgreater \ x= \frac{12}{5} =\ \textgreater \ x=2,4 \\ \\ 3x=7,2\\ 7,2-y=12\\ y=19,2[/tex]