Question

rút gọn phân số :
12/30 
20/45 
28/70
34/51 

Answer 1

2/5

4/9

2/5

2/3

Answer 2

rút gọn phân số :
12/30 =2/5
20/45= 4/9
28/70=2/5
34/51 =2/3

Answer 3

12/30 = 2/5
20/45=  4/9
28/70= 2/5
34/51 = 2/3

Answer 4

\(\dfrac{2}{5}\)

\(\dfrac{4}{9}\)

\(\dfrac{2}{5}\)

\(\dfrac{2}{3}\)

Answer 5

\(\dfrac{12}{30}=\dfrac{12:6}{30:6}=\dfrac{2}{5}\)

\(\dfrac{20}{45}=\dfrac{20:5}{45:5}=\dfrac{4}{9}\)

\(\dfrac{28}{70}=\dfrac{28:14}{70:14}=\dfrac{2}{5}\)

\(\dfrac{34}{51}=\dfrac{34:17}{51:17}=\dfrac{2}{3}\)

Answer 6

\(\dfrac{12}{30}=\dfrac{12:6}{30:6}=\dfrac{2}{5}\)

\(\dfrac{20}{45}=\dfrac{20:5}{45:5}=\dfrac{4}{9}\)

\(\dfrac{28}{70}=\dfrac{28:14}{70:14}=\dfrac{2}{5}\)

\(\dfrac{34}{51}=\dfrac{34:17}{51:17}=\dfrac{2}{3}\)

Học tốt.

Answer 7

 

12/30= 2/5
4/9
 =2/5
2/3