Объяснение:

[tex]3x - y = 2 \\ 2x + y = 4[/tex]

[tex]3x - y = 2 \\ y = 4 - 2x[/tex]

[tex]3x - (4 - 2x) = 2[/tex]

[tex]x = \frac{6}{5} [/tex]

[tex]y = 4 - 2 \times \frac{6}{5} [/tex]

[tex]y = \frac{8}{5} [/tex]