\(\frac{2323+1313+1414+1515+1616}{4141+2222+2323+2424+2525}\)

=\(\frac{8181}{13635}\)

18180,8               

a) \(\dfrac{10}{20}=\dfrac{10:10}{20:10}=\dfrac{1}{2}\)

\(\dfrac{12}{72}=\dfrac{12:12}{72:12}=\dfrac{1}{6}\)

\(\dfrac{14}{42}=\dfrac{14:14}{42:14}=\dfrac{1}{3}\)

\(\dfrac{25}{100}=\dfrac{25:25}{100:25}=\dfrac{1}{4}\)

b) \(\dfrac{1010}{1313}=\dfrac{1010:101}{1313:101}=\dfrac{10}{13}\)

\(\dfrac{1111}{1414}=\dfrac{1111:101}{1414:101}=\dfrac{11}{14}\)

c) \(\dfrac{143}{154}=\dfrac{143:11}{154:11}=\dfrac{13}{14}\)

\(\dfrac{990}{2610}=\dfrac{990:90}{2610:90}=\dfrac{11}{29}\)

\(\dfrac{374}{506}=\dfrac{374:22}{506:22}=\dfrac{17}{23}\)

\(a)\dfrac{10}{20}=\dfrac{1}{2};\dfrac{12}{72}=\dfrac{1}{6};\dfrac{14}{42}=\dfrac{1}{3};\dfrac{25}{100}=\dfrac{1}{4}\)

\(b)\dfrac{1010}{1313}=\dfrac{10}{13};\dfrac{1111}{1414}=\dfrac{11}{14}\)

\(c)\dfrac{143}{154}=\dfrac{13}{14};\dfrac{990}{2610}=\dfrac{11}{29};\dfrac{374}{506}=\dfrac{17}{23}\)

Chúc bn học tốt !!!

giup mk voi

\(\frac{1010+1111+1212+1313+1414+1515}{2020+2121+2222+2323+2424+2525}=\frac{10\times101+11\times101+12\times101+13\times101+14\times101+15\times101}{20\times101+21\times101+22\times101+23\times101+24\times101+25\times101}=\frac{101\times\left(10+11+12+13+14+15\right)}{101\times\left(20+21+22+23+24+25\right)}\)

\(=\frac{10+11+12+13+14+15}{20+21+22+23+24+25}=\frac{75}{135}=\frac{5}{9}\)

1010+1111+1212+1313+1414+1515= 7575

2020+2121+2222+2323+2424+2525= 13635

có 1 dấu gạch ngang mờ nhạt kìa bạn

mình trả lời bạn k mình nhé

ok bạn

a. \(\frac{26}{42}< \frac{56}{78}\)

b.\(\frac{58}{89}< \frac{36}{53}\)

c.\(\frac{1530}{1632}>\frac{1414}{1515}\)

d.\(\frac{-373737}{515151}>\frac{-1111}{1212}\)

k cho mk nha!!!!

giải chi tiết  hộ mk nha!

65/91=5/7

1414/1919=14/19

ai k mik mik k lại

\(\frac{65}{91}=\frac{65:13}{91:13}=\frac{5}{7}\)

\(\frac{1414}{1919}=\frac{1414:101}{1919:101}=\frac{14}{19}\)

\(\frac{65}{91}=\frac{5}{7}\);    \(\frac{1414}{1919}=\frac{14}{19}\)

\(\frac{1212}{3939}\)= \(\frac{4}{13}\)

4/13 nhé

\(\frac{1212}{3939}=\frac{303.4}{303.13}=\frac{4}{13}\)