Add up to 20

Addition of two numbers with sum up to 20

6

+

2


4

+

16


7

+

9


3

+

11


4

+

9


13

+

4


3

+

14


2

+

1


4

+

2


9

+

6


7

+

4


3

+

11


15

+

2


1

+

16


9

+

1


10

+

8


1

+

10


1

+

6


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