September 2018 1 20 Report

prosze o rozwiązanie .

1. 3x-2y=4

y=1

2. 3x+y=10

y=2x

3. x+2y=14

y=3x

4. 4x-y=9

y=x

5. 3x+y=1

y= -2x

6. 4x+2y = 6

y=-x

7.-3x - y =2

y=-4x

8. -x-3y=15

y=-2x

9. 2x-4y=18

y=5x

10.3x+6y=12

x=-3y

11. x+y= 3

x-y=1

12. 2x+y=1

x-y=2

13.-3x+2y=1

x-y=3

14. x+y=9

x-y= -1

15. x+y=8

x-y=0

16. y-x=-7

x+y=13

17. 2x+y=3

x+y=1

18. 4x-y=3

x+y=7

19. x-5y=1

x-2y=4

20. 3x-y= -5

5x-y=-7

21. x+3y= -7

2y-x= -8


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