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Działania na ułamkach zwykłych

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1/2 + 2/8 =

3/4

15

4/8 + 1/6 =

2/3

15

3/9 + 2/3 =

1

15

3/6 + 2/5 =

9/10

15

4/9 + 1/5 =

29/45

15

1/2 + 1/4 =

3/4

15

2/7 + 3/8 =

37/56

15

3/4 + 1/5 =

19/20

15

2/4 - 4/9 =

1/18

15

2/3 - 1/5 =

7/15

15

1/3 - 2/8 =

1/12

15

3/4 - 1/2 =

1/4

15

3/3 - 6/9 =

1/3

15

2/4 - 2/8 =

1/4

15

4/6 - 1/4 =

5/12

15

4/7 - 1/2 =

1/14

15

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