2.

[tex]\displaystyle\bf\\\left \{ {{4x - 3y = 7} \atop {2x + y = 11 \: \: | \times ( - 2)}} \right. \\ \displaystyle\bf\\ + \left \{ {{4x - 3y = 7} \atop { - 4x - 2y = - 22 }} \right. \\ \\ 4x - 4x - 3y - 2y = - 22 + 7 \\ 0 - 5y = - 15[/tex]

Ответ: В)