12/13

\(\dfrac{1212}{1313}=\dfrac{1212:101}{1313:101}=\dfrac{12}{13}\)

= \(\dfrac{12}{13}\)

1212/1313=1212:101/1313:101=12/13

1212/1313=1212:101/1313:101=12/13

= 12/13 vi 1212:11=12 1313:11=13

a )   − 1212 − 2424 = ( − 1212 ) : ( − 1212 ) ( − 2424 ) : ( − 1212 ) = 1 2

b )   120120 − 240240 = 120120 : ( − 120120 ) − 240240 : ( − 120120 ) = − 1 2

c)  1313 − 1414 = 1313 : ( − 101 ) − 1414 : ( − 101 ) = − 13 14

a) 33 66 = 33 : 33 66 : 33 = 1 2 b ) − 22 77 = − 22 : 11 77 : 11 = − 2 7

c ) 3030 6060 = 3030 : 3030 6060 : 3030 = − 1 2 d ) − 1212 − 2424 = ( − 1212 ) : ( − 1212 ) ( − 2424 ) : ( − 1212 ) = 1 2

e ) 120120 − 240240 = 120120 : ( − 120120 ) − 240240 : ( − 120120 ) = − 1 2

f ) 1313 − 1414 = 1313 : ( − 101 ) − 1414 : ( − 101 ) = − 13 14

5/7>6/21

18/24>15/25

12/13=1212/1313

\(\dfrac{5}{7}\)>\(\dfrac{6}{21}\)

\(\dfrac{18}{24}\)>\(\dfrac{15}{25}\)

\(\dfrac{12}{13}\)=\(\dfrac{1212}{1313}\)

Giải:   \(\frac{1212}{1313}=\frac{1212:101}{1313:101}=\frac{12}{13}\)

bằng 12 phần 13 chứ bao nhiêu

12/13

33/55=3/5

1212/1313=12/13

20/28=5/7

6/21=2/7

a, \(\frac{33}{55}=\frac{3}{5}\)

b, \(\frac{1212}{1313}=\frac{12}{13}\)

c, \(\frac{20}{28}=\frac{5}{7}\)

d, \(\frac{6}{21}=\frac{2}{7}\)

a) \(\frac{33}{55}=\frac{3}{5}\)

b) \(\frac{1212}{1313}=\frac{12}{13}\)

c) \(\frac{20}{28}=\frac{5}{7}\)

d) \(\frac{6}{21}=\frac{2}{7}\)

Giải cho mình cho mình với sáng mai mình phải nộp bài này rồi