Предмет: Алгебра, автор: pasha8038

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Автор ответа: Nika5204
0

{x+3y=2

{2x+3y=7

1) x+3y=2

x=2-3y

2) 2x+3y=7

2×(2-3y)+3y=7

4-6y+3y=7

-6y+3y=7-4

y (-6+3)=3

-3y=3

y=-1

3) x+3y=2

x-3=2

x=2+3

x=5

Ответ: (5;-1)

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This is a story about an old man and an old woman. They lived near the fine green woods. One summer day the old man went to the woods to pick mushrooms. It was a hot day and the old man soon got tired and thirsty, but there was no water in the woods. So he sat down under the tree to rest.


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