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

1212/1313= 12/13

=12/13

#FakeLove#

1212/1313=12/13

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

1212/1313=12/13

Đúng 100%

Phân số cần tìm là:

         \(\frac{1212}{1313}=\frac{1212:11}{1313:11}=\frac{12}{13}\)

                                                   Đáp số: \(\frac{12}{13}\)

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

Bạn Le Nhat Phuong làm sai rồi

1212 và 1313 chia 11 dư mà

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

1. \(\frac{12}{18}\)= \(\frac{2}{3}\)

    \(\frac{22}{33}\)= \(\frac{2}{3}\)

    \(\frac{1010}{1313}\)= \(\frac{10}{13}\)

    \(\frac{27}{36}\)= \(\frac{3}{4}\)

    \(\frac{202}{303}\)= \(\frac{2}{3}\)

    \(\frac{1111}{1212}\)= \(\frac{11}{12}\)

2. a) 12 x \(\frac{1313}{13}\)x  1212

       = 12 x \(\frac{13}{13}\)x 1212

1.    \(\frac{12}{18}=\frac{2}{3}\):   \(\frac{22}{33}=\frac{2}{3}\);  \(\frac{1010}{1313}=\frac{10}{13}\);  \(\frac{27}{36}=\frac{3}{4}\)  ; \(\frac{202}{303}=\frac{2}{3}\);\(\frac{1111}{1212}=\frac{11}{12}\)

2 a)\(\frac{12X1313}{13X1212}=\frac{12X13X101}{13X12X101}=1\);b)   \(\frac{1111X121212}{1212X111111}=\frac{11X101X12X10101}{12X101X11X10101}=1\)

22/33

5/7>6/21

18/24>15/25

12/13=1212/1313

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

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

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