Odpowiedź :
Rozwiązanie układu równań :
{-7x + 2y = 13
{-5x + y = 11
{y = 5x + 11
{-7x + 2(5x + 11) = 13
{y = 5x + 11
{-7x + 10x + 22 = 13 | - 22
{y = 5x + 11
{3x = -9 | : 3
{x = -3
{y = 5 * (-3) + 11
{x = -3
{y = -4
Rozwiązanie układu równań :
{-7x + 2y = 13
{-5x + y = 11
{y = 5x + 11
{-7x + 2(5x + 11) = 13
{y = 5x + 11
{-7x + 10x + 22 = 13 | - 22
{y = 5x + 11
{3x = -9 | : 3
{x = -3
{y = 5 * (-3) + 11
{x = -3
{y = -4