Предмет: Алгебра, автор: tag03

О, Бог, в пору иди снова в школу учиться. Помогите!
$left { {{2x+5y=10} atop {4x+10y=15} right.$

Ответы

Автор ответа: ShirokovP

0

2x + 5y = 10
4x + 10y = 15 /: ( - 2)

2x + 5y = 10
- 2x - 5y = - 7,5
-------------------- +
2x - 2x + 5y - 5y = 2,5
0 ≠ 2,5

Нет решений

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