Question

so sánh

\(\frac{12}{10}\) và \(\frac{6}{5}\)

\(\frac{13}{15}\) và \(\frac{232323}{252525}\)

Answer 1

a) Ta có :

\(\frac{12}{10}-1=\frac{12}{10}-\frac{10}{10}=\frac{2}{10}\)

\(\frac{6}{5}-1=\frac{6}{5}-\frac{5}{5}=\frac{1}{5}\)

Ta thấy : \(\frac{2}{10}=\frac{1}{5}\)nên \(\frac{12}{10}=\frac{6}{5}\)

b) \(\frac{232323}{252525}=\frac{232323\div10101}{252525\div10101}=\frac{23}{25}\)

Ta có :

\(\frac{13}{15}=\frac{13\times25}{15\times25}=\frac{325}{375};\frac{23}{25}=\frac{23\times15}{25\times15}=\frac{345}{375}\)

Vì \(\frac{325}{375}< \frac{345}{375}\)nên \(\frac{13}{15}< \frac{232323}{252525}\)

Answer 2

Doraeiga mày bị thiếu máu não à CTV ngu hơ ncon bò : 

Ta có : \(\frac{12}{10}=\frac{12:2}{10:2}=\frac{6}{5}\)

Vậy \(\frac{12}{10}=\frac{6}{5}\)

Answer 3

a)\(\frac{12}{10}=\frac{12:2}{10:2}=\frac{6}{5}\)= > \(\frac{12}{10}=\frac{6}{5}\)

b) Ta có :\(\frac{232323}{252525}=\frac{232323:10101}{252525:10101}=\frac{23}{25}\)

Có : 1 - \(\frac{13}{15}=\frac{2}{15}\); 1 - \(\frac{23}{25}=\frac{2}{25}\)

Mà : \(\frac{2}{15}>\frac{2}{25}=>\frac{13}{15}< \frac{232323}{252525}\)