a, \(\frac{51}{60};\frac{52}{60};\frac{41}{60}\)
b, \(\frac{1}{3};\frac{1}{2};\frac{11}{12}=\frac{4}{12};\frac{6}{12};\frac{11}{12}\)
trả lời
a)51/60;52/60;41/60
b)4/12;6/12;11/12
a) \(\frac{51}{60}\); \(\frac{52}{60}\); \(\frac{41}{60}\)
b) \(\frac{4}{12}\); \(\frac{6}{12}\); \(\frac{11}{12}\)
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