Question

решите систему уравнений​

Answer 1

1) x - 6y = 20

4x + 2y = 2

2) 2x - 12y = 40

2x + y = 1

3) -13y = 39

y = -3

4) x - ( 6 × ( -3 ) ) = 20

x + 18 = 20

x = 2

Ответ: x = 2, y = -3

Answer 2

( x - 6y = 20 ) × 2