Răspuns :

Răspuns:

Explicație pas cu pas:

a) 3/10, 4/5, 1/3

10=2*5

5=1*5

3=1*3

nc = 2*3*5=30

3/10=3*3/30=9/30

4/5= 2*6/30=24/30

1/3=1*10/30=10/30

b) 5/8, 7/12

8=2³

12=2² *3

nc= 2³ *3=8*3=24

5/8= 5*3/24 =15/24

7/12=7*2/24=14/24

c) 4/9, 7/12​

9=3²

12=2²*3

nc= 2² *3² =4*9=36

4/9= 4*4/36=16/36

7/12=7*3/36=21/36

succes !

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