{3х+2у=4,
{-3х+7у=14;
{-3х+3х+7у+2у=14+4,
{3х+2у=4;
{9у=18,
{у=2,
{3х+2×2=4;
{3х=0;
{х=0.
ответ: (0;2)
{3х+2у=4,
{-3х+7у=14;
{-3х+3х+7у+2у=14+4,
{3х+2у=4;
{9у=18,
{3х+2у=4;
{у=2,
{3х+2×2=4;
{у=2,
{3х=0;
{у=2,
{х=0.
ответ: (0;2)