Предмет: Алгебра, автор: denismelkhert2009

СРОЧНО!!!
{5у-2x=15
{-2x+y=10​

Ответы

Автор ответа: flepppyyt
0

Ответ:

5y - 2x = 15

-2x + y = 10

Сначала выразим y из второго уравнения:

-2x + y = 10

y = 2x + 10

Теперь мы можем подставить это значение y в первое уравнение:

5(2x + 10) - 2x = 15

Раскроем скобки:

10x + 50 - 2x = 15

Теперь объединим x-термы:

8x + 50 = 15

Теперь выразим x:

8x = 15 - 50

8x = -35

x = -35 / 8

x = -4.375

Теперь, когда мы знаем x, мы можем найти y, используя второе уравнение:

-2x + y = 10

-2(-4.375) + y = 10

8.75 + y = 10

Теперь выразим y:

y = 10 - 8.75

y = 1.25

Итак, решение системы уравнений:

x = -4.375

y = 1.25

Объяснение:

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