Question

quy đồng mẫu số 1/2, 1/3, 1/5

Answer 1

\(\dfrac{15}{30};\dfrac{10}{30};\dfrac{6}{30}\)

Answer 2

15/30

10/30

6/30

Answer 3

15/30; 10/30; 6/30

Answer 4

15/30 ; 10/30 ; 6/30 

Answer 5

MC LÀ 30

1/2=1 x 15/ 2x15 =15/30

1/3=1x10/3x10=10/30

1/5=1x6/5x6=6/30

Answer 6

\(\dfrac{1}{2}\)=\(\dfrac{1x3x5}{2x3x5}\)=\(\dfrac{15}{30}\) ; \(\dfrac{1}{3}\)=\(\dfrac{1x2x5}{3x2x5}\)=\(\dfrac{10}{30}\); \(\dfrac{1}{5}\)=\(\dfrac{1x2x3}{5x2x3}\)=\(\dfrac{6}{30}\)

Answer 7

15/30

10/30

6/30

Answer 8

15/30  ;  10/30  ;   6/30

Answer 9

= 15/30

= 10/30

= 6/30