Question

СРОЧНО ДАМ 100БАЛОВ!!!!!!!!!
(1; 4)

(4; 1)

(- 2; 2)

(2; 3)

(2; - 2)

(6; 1)

Answer 1

Ответ: x=4 ; y=1

$\left \{ {{y - x = - 3} \atop {x + 2y = 6}} \right. + \\ 3y = 3 \\ y = 1 \\ \\ x + 2y = 6 \\ x + 2 \times 1 = 6 \\ x + 2 = 6 \\ x = 4$

Ответ: x=6 ; y=1

$\left \{ {{x + y = 7} \atop {x - y = 5}} \right. + \\ 2x = 12 \\ x = 6 \\ \\ x + y = 7 \\ 6 + y = 7 \\ y = 1$