{х–7у–3=0,
{х–у+5=0.
{х–7у=3,
{х–у=-5. |*(–7).
{–7х+7у=35.
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–6х=38; х=–38/6=–19/3.
–19/3–у+5=0;
–4/3–у=0;
–у=4/3;
у=–4/3.
Ответ: (–19/3; –4/3).
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Answers & Comments
{х–7у–3=0,
{х–у+5=0.
{х–7у=3,
{х–у=-5. |*(–7).
{х–7у=3,
{–7х+7у=35.
___________________
–6х=38; х=–38/6=–19/3.
–19/3–у+5=0;
–4/3–у=0;
–у=4/3;
у=–4/3.
Ответ: (–19/3; –4/3).