{5х+2у=8,
{11х-у=23(×2)
{5х+2у=8, {27х=54,
{22х-2у=46. {5х+2у=8
1)27х=54. 2)5х+2у=8
х=2. 5•2+2у=8
2у=8-10
у=-2:2
у=-1
ответ: (2;-1)
{5х+2у=8,
{11х-у=23(×2)
{5х+2у=8, {27х=54,
{22х-2у=46. {5х+2у=8
1)27х=54. 2)5х+2у=8
х=2. 5•2+2у=8
2у=8-10
у=-2:2
у=-1
ответ: (2;-1)