Question

Rút gọn các phân số

3/9=.....

15/27=.....

28/20=....

5/105=.....

24/39=.....

 

Answer 1

\(\dfrac{3}{9}=\dfrac{3:3}{9:3}=\dfrac{1}{3}\)

\(\dfrac{15}{27}=\dfrac{15:3}{27:3}=\dfrac{5}{9}\)

\(\dfrac{28}{20}=\dfrac{28:4}{20:4}=\dfrac{7}{5}\)

\(\dfrac{5}{105}=\dfrac{5:5}{105:5}=\dfrac{1}{21}\)

\(\dfrac{24}{39}=\dfrac{24:3}{39:3}=\dfrac{8}{13}\)

Answer 2

3/9=.....1/3

15/27=.....5/9

28/20=....7/5

5/105=.....1/21

24/39=.....8/13

 

Answer 3

1/3

5/9

7/5

1/21

8/13

Answer 4

1/3

ko biết

7/5

1/21

ko biết

Answer 5

\(\dfrac{3}{9}=\dfrac{1}{3}\)

\(\dfrac{15}{27}=\dfrac{5}{9}\)

\(\dfrac{28}{20}=\dfrac{7}{5}\)

\(\dfrac{5}{105}=\dfrac{1}{21}\)

\(\dfrac{24}{39}=\dfrac{8}{13}\)

tham khảo nha.