Question

niech ktos rozwiaze te zadania (jakby co to znak / oznacza kreske ulamkowa) : 2/3 + 3-5
4/9 + 5/6
2/15 + 3/10
4/5 + 7/10
5/12 + 3/8
4/15 + 5/12
3/8 + 7/9
8/10 + 7/25
6/15 + 2/3
Proszę pomużcie !! :) Bede wdzieczna

Answer 1

2/3 + 3-5=19/15

4/9 + 5/6=23/18
2/15 + 3/10=13/30
4/5 + 7/10=1,5
5/12 + 3/8=25/24
4/15 + 5/12=41/60
3/8 + 7/9=83/72
8/10 + 7/25=54/50
6/15 + 2/3=16/15

Answer 2

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

 

4/9+5/6= 24/54 + 45/54 = 69/54 = 1 i 15/54

 

2/15 + 3/10 = 4/30 + 9/30 = 13/30

 

4/5 + 7/10= 16/20 + 14/20 = 20/20 = 1

 

5/12 + 3/8= 10/24 + 9/24 = 19/24

 

4/15 + 5/12= 16/60 + 25/60 = 41/60

 

3/8 + 7/9= 27/72 + 56/72 = 83/72 = 1 11/ 72

 

8/10 + 7/25= 80/100 + 28/100 = 108/100= 1i 2/25

 

6/15 + 2/3= 12/30 + 20/30 = 32/30 = 1 i 2/30