Предмет: Алгебра, автор: rashidaailinmalik

помогите пожалуйста {1:2x-1:3y=1, {3x-5y=-3

Приложения:

Ответы

Автор ответа: Аноним

0

Ответ:

Объяснение:

1/2 ·x -1/3 ·y=1

3x-5y=-3

1) 1/2 ·x -1/3 ·y=1

3/6 ·x -2/6 ·y=1 ×(-6)

-3x+2y=-6

3x-5y-3x+2y=-3-6

-3y=-9

y=9/3=3

3x-5·3=-3 ⇒ 3x=-3+15 ⇒ x=12/3=4

Ответ: (4; 3).

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