\(\frac{4}{9}=0,444...\)
\(\frac{8}{17}=0,47......\)
vì 0,47>0,44 \(\Rightarrow\frac{4}{9}< \frac{8}{17}\)
4/9 = 4/9 x 17/17 = 68 /153
8/17 = 8/17 x 9/9 = 72/153
vậy 68/153 < 72/153 nên 4/9 < 8/17
Ta có TSC bằng 8
\(\Leftrightarrow\frac{4}{9}=\frac{8}{18}va\frac{8}{17}=\frac{8}{17}\)
Do 18 > 17
\(\Rightarrow\frac{8}{18}< \frac{8}{17}\)
\(\Leftrightarrow\frac{4}{9}< \frac{8}{17}\)
C1 : Lam theo p/s chung gian
4/9 < 8/9 ; 8/17 > 4/17
Vay 4/9 < 8/17
C2 . Tim thuong
Ta co : 4/9 : 8/17 = 17/18
Vi 4/9 : 8/17 co ket qua be hon 1 nen 4/9 < 8/17
Ta có :\(\frac{4}{9}=\frac{4.17}{9.17}=\frac{68}{153}\)
\(\frac{8}{17}=\frac{8.9}{17.9}=\frac{72}{153}\)
\(\Rightarrow\frac{8}{17}>\frac{4}{9}\)
\(\frac{4}{9}=\frac{68}{153}\) \(\frac{8}{17}=\frac{72}{153}\)
Vì \(\frac{68}{153}< \frac{72}{153}\)nên \(\frac{4}{9}< \frac{8}{17}\)
