Question

Viết phân số rút gọn của các phân số sau:

a, \(\dfrac{30}{84}\)=........                                       b,\(\dfrac{35}{210}\)=...........

c,\(\dfrac{210}{140}\)=........                                      d,\(\dfrac{320}{280}\)=...........

Answer 1

a, =5/14

b, = 1/6

c, = 3/2

d, = 8/7

Answer 2

5/14

1/6

3/2

8/7

Answer 3

a,5/14

b,1/6

c,3/2

d,8/7

Answer 4

a, = 15/42

b, = 1/6

c, = 21/14

d, = 8/7

Answer 5

`a, 30/84 = ( 30 : 6 )/( 84 : 6 ) = 5/14`

`b, 35/210 = ( 35:35 )/( 210:35)=1/6`

`c,210/140=(210:70)/(140:70)=3/2`

`d,320/280=(320:40)/(280:40)=8/7` 

Answer 6

5/14

1/6

3/2

8/7

Answer 7

a)5/14
b)1/6

c)3/2
d)8/7