Предмет: Алгебра, автор: nikaname86

Можете решить задание подробно ?
заранее спасибо




от Арми )​

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Ответы

Автор ответа: Evgenia4836
1

1) x+y+x-y=6+8

y=x-8


2x=14

y=x-8


x=7

y= -1

2) 3x+y+5x-y=14+10

y=5x-10


8x=24

y=5x-10


x=3

y=5

3) 2x-9y+7x+9y=11+25

y=(25-7x)/9


9x=36

y=(25-7x)/9


x=4

y= -1/3

4) -6x+y+6x+4y=16+34

x=(34-4y)/6


5y=50

x=(34-4y)/6


y=10

x=(34-40)/6


x= -1

y=10


nikaname86: пасиб
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