Question

2)
Y = x - 5,
(4x + y = 10;​

Answer 1

Ответ:

$y = x - 5 \\ 4x + y = 10$

$4x + (x - 5) = 10 \\ 5x - 5 = 10 \\ 5x = 10 + 5 \\ 5x = 15 \\ x = 15 \div 5$

$x = 3$

$y = 3 - 5 = - 2$

Ответ: х=3, у=-2