Question

$x - y = 3 2x + 3y = 16$
​

Answer 1

Ответ:

$x = 3 + y \\ 2(3 + y) + 3y = 16 \\ 6 + 2y + 3y = 16 \\ 5y = 10 \\ y = 2 \\ y = x - 3 \\ y = 2 - 3 \\ y = - 1$