[tex]\displaystyle\bf\\\left \{ {{x - 2y = 8} \atop {2x + y = 1 \: \: | \times 2 }} \right. \\ \displaystyle\bf\\ + \left \{ {{ x- 2y = 8} \atop {4x + 2y = 2 }} \right. \\ \\ x + 4x = 8 + 2 \\ 5x = 10 \\ x = 10 \div 5 \\ x = 2 \\ \\ 2 \times 2 + y = 1 \\ 4 + y = 1 \\ y = 1 - 4 \\ y = - 3[/tex]

Ответ: ( 2 ; - 3 )