Question

gải giúp mik bài 3 , 4

Answer 1

:)

 

Answer 2

a) 12/15-20/25=4/5-20/25=20/25-20/25=0

 

Answer 3

a. 4/8

b. 15/9

c.11/30

d.1/4

Answer 4

b) 27/18-9/15=3/2-3/5=15/10-6/10=9/10

Answer 5

c)14/28-25/75=1/2-1/3=3/6-2/6=1/6

Answer 6

Bài 1:

a)\(\dfrac{15}{8}-\dfrac{11}{8}=\dfrac{4}{8}\)

b) \(\dfrac{22}{9}-\dfrac{7}{9}=\dfrac{15}{9}\)

c)\(\dfrac{7}{6}-\dfrac{4}{5}=\dfrac{35}{30}-\dfrac{24}{30}=\dfrac{11}{30}\)

d) \(\dfrac{11}{12}-\dfrac{2}{3}=\dfrac{11}{12}-\dfrac{8}{12}=\dfrac{3}{12}=\dfrac{1}{4}\)

 

Answer 7

a. 4/8

b. 15/9

c.11/30

d.1/4

Answer 8

a.4/8

b15/9

c.11/30

d1/4