Question

Решите систему
{y=x+1
{5x+2y=16;​

Answer 1

$y = x + 1 \\ 5x + 2y = 16 \\ \\ 5x + 2(x + 1) = 16 \\ 5x + 2x + 2 = 16 \\ 7x = 16 - 2 \\ 7x = 14 \\ x = 14 \div 7 \\ x = 2 \\ \\ y = 2 + 1 \\ y = 3$

Ответ: ( 2 ; 3 )