>> 9 . . .. . 9

 

IV. .


1. : ?

2. :

3. X

4. (X) (Y)

1) X - 3; Y - 6
2) X = 3; Y - 5

3) X = 7; Y = 4
4) X - 7; Y = 13

5. (X) (Y) ,

1) = 7; Y = 17
2) X = 7; Y = 18

3) X = 9; Y = 19
4) = 9; Y = 18

6. (X) (Y)

1) X = 15; Y = 31
2) X = 16; Y = 32

3) X = 14; Y = 30
4) X = 12; Y = 24

7. (X) (Y)

1) = 9; Y = 18
2) X = 10; Y = 19

3) X = 8; Y = 17
4) X = 4; Y = 9

8. (X) (Y)

1) X = 25; Y = 54
2) X = 28; Y = 58

3) X = 29; Y = 62
4) X = 23; Y = 50

9. (X) (Y)

1) X = 4; Y = 8
2) X = 4; Y - 10

3) X = 2; Y = 6
4) X = 4; Y = 9

10. (X) (Y)

1) X Y 10; Y = 5
2) X = 5; Y = 12

3) X = 5; Y = 10
4) X = 1; Y = 4

 

 

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