Question

quy đồng mẫu các phân số

a, \(\frac{17}{20};\frac{13}{15};\frac{41}{60}\)

 

b,\(\frac{25}{75};\frac{17}{34};\frac{121}{132}\)

các bạn giúp  nha cảm ơn nhìu

Answer 1

a, \(\frac{51}{60};\frac{52}{60};\frac{41}{60}\)

b, \(\frac{1}{3};\frac{1}{2};\frac{11}{12}=\frac{4}{12};\frac{6}{12};\frac{11}{12}\)

Answer 2

trả lời

a)51/60;52/60;41/60

b)4/12;6/12;11/12

Answer 3

a) \(\frac{51}{60}\); \(\frac{52}{60}\); \(\frac{41}{60}\)

b) \(\frac{4}{12}\); \(\frac{6}{12}\); \(\frac{11}{12}\)

Answer 4

a)20=2² .5

15=3.5

60=2² .3.5

BCNN(20,15,60)=2² .3.5=60

17/20=17.3/20.3=51/60

13/15=13.4/15.4=54/60

41/60=41/60

b)25/75=25:25/75:25=1/3

17/34=17:17/34:17=1/2

121/132=121:11/132:11=11/12

3=3

2=2

12=2² .3

BCNN(3,2,12)=2² . 3=12

1/3=1.4/3.4=4/12

1/2=1.6/2.6=6/12

11/12=11/12