Question

a)2x-y=2,
3x-y=5;
б) x+y=4,
x-y=2. Графічною системою

Answer 1

Ответ:

1

$3x - y = 5 \\ - \\ 2x - y = 2 \\ \\x = 3$

$y = 2x - 2 = 6 - 2 = 4$

2

$x + y = 4 \\ + \\ x - y = 2 \\ \\ 2x = 8$

$x = 4 \\ y = x - 2 = x - 2 = 2$