Question

5x - 3y =19
{
2x + y = 1​

Answer 1

у=1-2х

5х-3*(1-2х)=19

5х-3+6х=19

11х=19+3

11х=22

х=22/11

х=2

у=1-2*2

у=-3

ответ: (2;-3)