4 a) 6/12 = 1/2 si 14/21 = 2/3
cmmmc al numerelor ( 2, 3 ) = 2 x 3 = 6
1/2 = 3/6
2/3 = 4/6
b) 5/20 = 1/4 si 22/55 = 2/5
cmmmc al numerelor ( 4,5) = 20
1/4 =5/20
2/5 = 8/20
c) 9/27 = 1/3 si 9/36 = 1/4
cmmmc al numerelor ( 3,4) = 12
1/3 = 4/12
1/4 = 3/12
d)
48/60 = (48 : 6) / ( 60 : 6 ) = 8/10 = 4/5
32/56 = ( 32: 8)/ ( 56 : 8 ) = 4/7
cmmmc al numerelor ( 5, 7) = 35
4/5 = 28/35
4/7 = 20/35
6)
a) 4/5, 7/10 , 3/4
cmmmc al numerelor ( 5, 10, 4 ) = 20
4/5 = 16/20
7/10 = 14/20
3/4 = 15/20
14/20 < 15/20 < 16/20
↓ ↓ ↓
7/10 < 3/4 < 4/5
b) 2/3, 4/9, 20/24= 5/6
cmmmc al numerelor ( 3, 9, 6) = 2 ×3²= 18
2/3 = 12/18
4/9 = 8/18
5/6 = 15/18
8/18 < 12/18 < 15/18
↓ ↓ ↓
4/9 < 2/3 < 5/6
c) 11/12; 6/16 = 3/8; 25/30 = 5/6
cmmmc al numerelor ( 12, 8, 6) = 2³×3=24
11/12= 22/24
3/8 = 9/24
5/6 = 20/24
9/24 < 20/24 < 22/24
↓ ↓ ↓
3/8 < 5/6 < 11/12
d)
3 intregi si 1/6 = 19/6
1 intreg si 2/3 = ( 1 x 3 +2)/3 = 5/3
2 intregi si 3/4 = 11/4
cmmmc ( 6, 3, 4 ) = 12
19 /6 = 38 /12
5/3 = 20/12
11/4 = 33/12
20/12 < 33/12 < 38/12
↓ ↓ ↓
5/3 < 11/4 < 19/6
