Question

Привили дрОби к наименьшему общему знаменателю​

Answer 1

Ответ:

Пошаговое объяснение:

1) 7/20 и 5/12; НОК (20; 12)=2·2·5·3=20·3=60

20=2·2·5; 12=2·2·3

7/20=(7·3)/60=21/60

60/12=5; 5/12=(5·5)/60=25/60

21/60 и 25/60

2) 11/24 и 1/30; НОК (24; 30)=2·3·5·2·2=30·4=120

30=2·3·5; 24=2·2·2·3

120/24=5; 11/24=(11·5)/120=55/120

1/30=(1·4)/120=4/120

55/120 и 4/120

3) 3/16 и 7/12; НОК (16; 12)=2·2·2·2·3=16·3=48

16=2·2·2·2; 12=2·2·3

3/16=(3·3)/48=9/48

48/12=4; 7/12=(7·4)/48=28/48

9/48 и 28/48

4) 11/18 и 7/12; НОК (18; 12)=2·3·3·2=18·2=36

18=2·3·3; 12=2·2·3

11/18=(11·2)/36=22/36

36/12=3; 7/12=(7·3)/36=21/36

22/36 и 21/36

5) 1/12 и 2/9; НОК (12; 9)=2·2·3·3=12·3=36

12=2·2·3; 9=3·3

1/12=(1·3)/36=3/36

36/9=4; 2/9=(2·4)/36=8/36

3/36 и 8/36

6) 4/21 и 13/28; НОК (21; 28)=2·2·7·3=28·3=84

28=2·2·7; 21=3·7

84/21=4; 4/21=(4·4)/84=16/84

13/28=(13·3)/84=39/84

16/84 и 39/84

7) 8/15 и 5/12; НОК (15; 12)=3·5·2·2=15·4=60

15=3·5; 12=2·2·3

8/15=(8·4)/60=32/60

60/12=5; 5/12=(5·5)/60=25/60

32/60 и 25/60

8) 7/30 и 1/12; НОК (30; 12)=2·3·5·2=30·2=60

30=2·3·5; 12=2·2·3

7/30=(7·2)/60=14/60

60/12=5; 1/12=(1·5)/60=5/60

14/60 и 5/60