Question

Va rog dau coroană ​

Answer 1

{4x + y = 8 => y = 8 - 4x

{3x - 5y = 29

{y = 8 - 4x

{3x - 5(8 - 4x) = 29

{y = 8 - 4x

{3x - 40 + 20x = 29

{y = 8 - 4x

{23x = 69 => x = 3

{y = -4

{x = 3 => S = {3, -4}