11/6

\(\dfrac{11}{6}\)

Phân số trên đã là phân số tối giản rồi 

Phân số trên đã là phân số tối giản rồi 

121/99 =11/9

bằng 11/9 nhé!

\(\dfrac{12}{18}=\dfrac{12:6}{18:6}=\dfrac{2}{3}\)

\(\dfrac{49}{21}=\dfrac{49:7}{21:7}=\dfrac{7}{3}\)

\(\dfrac{15}{35}=\dfrac{15:5}{35:5}=\dfrac{3}{7}\)

\(\dfrac{26}{34}=\dfrac{26:2}{34:2}=\dfrac{13}{17}\)

\(\dfrac{11}{121}=\dfrac{11:11}{121:11}=\dfrac{1}{11}\)

\(\dfrac{12}{18}=\dfrac{12:6}{18:6}=\dfrac{2}{3};\dfrac{49}{21}=\dfrac{49:7}{21:7}=\dfrac{7}{3};\dfrac{15}{35}=\dfrac{15:5}{35:5}=\dfrac{3}{7};\dfrac{26}{34}=\dfrac{26:2}{34:2}=\dfrac{13}{17};\dfrac{11}{121}=\dfrac{11:11}{121:11}=\dfrac{1}{11}\)

a: \(\frac{35}{40}=\frac{35:5}{40:5}=\frac78;\frac{105}{121}<\frac{105}{120}=\frac78\)

Do đó: \(\frac{105}{121}<\frac{35}{40}\)

b: \(\frac{18}{46}<\frac{18}{45}=\frac25;\frac{21}{45}>\frac{18}{45}=\frac25\)

Do đó: \(\frac{21}{45}>\frac{18}{46}\)

121/143=11/13

1212/1414=6/7

123123/456456=123/456=41/152

\(\dfrac{121}{143}=\dfrac{11}{13}\) ;  \(\dfrac{1212}{1414}=\dfrac{6}{7}\) ;  \(\dfrac{123}{456}=\dfrac{41}{152}\)

21/15=7/5

11/121=1/11

27/72=3/8

\(\dfrac{121\times75\times130\times169}{39\times60\times11\times198}\)

\(=\dfrac{25\times169}{6\times18}\)

\(=\dfrac{4225}{108}\)

668068830000

= 199377750/5096520

=4225/108