Ответ:
{4х+3у=0|×(-5)
{5х-7у=43|×4
{-20х-15у=0
{20х-28у=172
{-43у=172
{у= -4
{4х-12=0
{х=3
у= -4, х=3
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Ответ:
{4х+3у=0|×(-5)
{5х-7у=43|×4
{-20х-15у=0
{20х-28у=172
{-43у=172
{у= -4
{4х-12=0
{х=3
у= -4, х=3