Question

prosze na teraz
daje 50 pkt. i najjjjj
cwiczenie B i C
​

Answer 1

Verified answer

Odpowiedź:

3/7 + 5/7 = 8/7 = 1 i 1/7

6/11 - 4/11 = 2/11

10 - 4/5 = 9 i 5/5 - 4/5 = 9 i 1/5

7 - 3 i 1/6 = 6 i 6/6 - 3 i 1/6 = 3 i 5/6

2 i 3/5 + 7 i 1/5 = 9 i 4/5

6 i 3/7 + 8 i 4/7 = 14 i 7/7 = 15

6 i 8/9 - 2 i 5/9 = 4 i 3/9 = 4 i 1/3

1 i 2/9 - 7/9 = 11/9 - 7/9 = 4/9

3/4 + 5/8 = 6/8 + 5/8 = 11/8 = 1 i 3/8

3 i 1/2 + 4 i 5/6 = 3 i 3/6 + 4 i 5/6 = 7 i 8/6 = 8 i 2/6 = 8 i 1/3

2/3 + 3/5 = 10/15 + 9/15 = 19/15 = 1 i 4/15

2/3 - 3/5 = 10/15 - 9/15 = 1/15

1 i 2/7 - 1/2 = 1 i 4/14 - 7/14 = 18/14 - 7/14 = 11/14

2 i 3/4 - 5/12 = 2 i 9/12 - 5/12 = 2 i 4/12 = 2 i 1/3

6 i 1/6 - 3 i 3/8 = 6 i 4/24 - 3 i 9/24 = 5 i 28/24 - 3 i 9/24 = 2 i 19/24

9 i 5/8 - 5 i 7/10 = 9 i 25/40 - 5 i 28/40 = 8 i 65/40 - 5 i 28/40 = 3 i 37/40

C

3/5 * 10/11 = 6/11   skracamy 10 i 5 przez 5

3/7 * 14 = 6  skr 14 i 7 przez 7

1 i 3/4 * 6/7 = 7/4 * 6/7 = 3/2 = 1 i 1/2  skr 7 i 7 przez 7 a 6 i 4 przez 2

2 i 5/8 * 1 i 1/7 = 21/8 * 8/7 = 3  skr 21 i 7 przez 7 a 8 i 8 przez 8

3/4 : 1/3 = 3/4 * 3/1 = 9/4 = 2 i 1/4

8/15 : 4 = 8/15 * 1/4 = 2/15   skr 8 i 4 przez 4

4 i 1/2 : 1 i 1/8 = 9/2 * 8/9 = 4   skr 9 i 9 przez 9 a 8 i 2 przez 2

5 i 3/4 : 3 = 23/4 * 1/3 = 23/12 = 1 i 11/12