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Автор - нора14

решите систему уравнений
{3х+5у=2
{4х+7у=6

Ответ

Автор - innakosmakova
1)3x=2-5y
x=(2-5y)/3
2)4*(2-5y)/3+7y=6
8-20y+21y=18(домножила на 3)
y=10
3) подставляем в 1
x=(2-5*10)/3
x=-48/3
x=-16

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