Question

Тут общая доска ! y = x - 3
5x + 2y = 29

Answer 1

Объяснение:

$y = x - 3 \\ 5x + 2y = 29 \\ \\ 5x + 2(x - 3) = 29 \\ 5x + 2x - 6 = 29 \\ 7x - 6 = 29 \\ 7x = 29 + 6 \\ 7x = 35 \\ x = \frac{35}{7} = 5 \\ y = 5 - 3 = 2 \\ \\ x = 5 \\ y = 2$