Предмет: Математика, автор: kabakovazazira

решите систему уравнения методом подстановки {у-х=5 {4х+у=10​

Ответы

Автор ответа: 1Manka1
0
{у-х=5
{4х+у=10

{у=5+х
{4х+у=10

4х+5+х=10
5х+5=10
5х=10-5
5х=5
х=5/5
х=1
у=5+1
у=6
(х;у)=(1;6)
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