Odpowiedzi

2010-03-07T18:32:07+01:00
Zad.1
4/9 - 1/4 =16\36 - 9\36=7\36

7/8 - 5/6 =21/24 - 20\24=1\24

7 i 1/4 - 5 i 16/48 =7 12\48 - 5 16\48=1 44\48=1 11\12

zad.2
10/17 : 4 =10/17 * 1\4=10\68=5/34

zad.3
3/8 liczby 40= 3\8 *40=120\8=15
2 i 5/18 liczby 27= 41/18 *27=41/2 *3=123/2= 61 ½

zad.4

4 i 3/4 *8 + 2 i 1/7 : 20 =19/4 * 8 + 15/7 * 1/20=19*2 + 15\140=
38+9 5/140= 47 1\28
2010-03-07T18:34:27+01:00
4/9 - 1/4= 16/36 - 9/36= 7/36
7/8 - 5/6=42/48 - 30/48 = 12/48 = 1/4
7i1/4 - 5i16/48= 7 i 12/48 - 5 i 16/48 = 6 i 60/48 - 5 i 16/48 = 1 i 44/48 = 1 i 11/22

zad.2
10/17 : 4 = 10/17 *1/4 = 10/64

zad.3
3/8 * 40 = 15
2 i 5/18 * 27 = 41/18 * 27 = 61,5

zad.4
4 i 3/4 * 8/1 + 2 i 1/7 : 20 = 19/4 * 8/1 + 15/7 * 1/20 = 38/1 + 3/28 = 1064/28 + 3/28 = 1069/28
2010-03-07T18:36:07+01:00
1.
4/9 - 1/4 = 16/36 - 9/36 = 7/36

7/8 - 5/6 = 42/48 - 40/48=2/48=1/24

7 i 1/4 - 5 i 16/48 =1/12

2.
10/17 : 4 =10/17 *1/4= 5/34

3.
3/8 liczby 40=15
2 i 5/18 liczby 27=61.5
4.
4 i 3/4 *8 + 2 i 1/7 : 20 = 1681/70=24 i 1/70