Ответ:
{2х+y=1 |×(-3) {-6х-3y=-3
{х+3y=13 {х+3у=13
-5х=10
x=-2
{х=-2
{-2+3у=13
3у=15
у=5
Ответ: (-2;5)
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Ответ:
{2х+y=1 |×(-3) {-6х-3y=-3
{х+3y=13 {х+3у=13
-5х=10
x=-2
{х=-2
{-2+3у=13
3у=15
у=5
Ответ: (-2;5)