a ) Sắp sếp theo thứ tự tăng dần :
- 2015 ; - 53 ; - 25 ; - 7 ; - 1 ; 0 ; 7 15 ; 53
b ) Rút gọn phân số rồi so sáh
\(\frac{3.4+3.7}{6.5+24}\) = \(\frac{1.1+1.7}{3.5+8}\)= \(\frac{7}{23}\)
\(\frac{23.5-23}{46+3.23}\) = \(\frac{1.5-1}{2+3.1}\) = \(\frac{4}{5}\)
\(\frac{7}{23}=\frac{7.5}{23.5}=\frac{35}{115}\)
\(\frac{4}{5}=\frac{4.23}{5.23}=\frac{92}{115}\)
Vì \(\frac{35}{115}< \frac{92}{115}\Rightarrow\frac{3.4+3.7}{6.5+24}< \frac{23.5-23}{46+3.23}\)
Tk mk nha