Предмет: Алгебра, автор: ПанБорис

розвязати систему рівнянь {4х+5y=16}
{3х-5у=-23]

Ответы

Автор ответа: Аноним
0
4х + 5y = 16
3x - 5y = - 23
Решение способом сложения
4х + 3х + 5y - 5y = 16 - 23
7x = - 7
X = - 1
3•( - 1 ) - 5y = - 23
- 5y = - 23 + 3
- 5y = - 20
y = 4
Ответ ( - 1 ; 4 )
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