Предмет: Алгебра, автор: koptuloanna2

4x+2y = 5,
4х – бу = -11
Розв'яжіть систему
рівнянь методом
додавання
(-2;1/4)
(0;2,5)
(1/4;2)
(1:13)​

Ответы

Автор ответа: cyfra17
0

Ответ:

Объяснение:

    {4x+2y=5

    {4x-6y=-11 // *  (-1)

    {4x+2y=5

(+) {-4x+6y=11

-------------------.

          8y=16  // : 8

            y=2    podstawiam do (1) równania 4x+2y=5

4x+2*2=5

       4x+4=5

           4x=1  // : 4

            x=1/4

OTBET: rozwiazaniem układu równań jest para liczb : (1/4;2)       (3)

     

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