Răspunsuri

2014-04-06T14:12:23+03:00
{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}    
2014-04-06T14:14:03+03:00