Câu a đây nha bạn : https://olm.vn/hoi-dap/question/658010.html
a) Có: \(\frac{3}{8}\)= \(\frac{3.49}{8.49}\)= \(\frac{147}{8.49}\)
\(\frac{17}{49}\)= \(\frac{17.8}{8.49}\)= \(\frac{136}{8.49}\)
Vì 147>136 nên \(\frac{3}{8}\)> \(\frac{17}{49}\)
Học tốt ^-^
Ta có: 1- \(\frac{41}{61}\)= \(\frac{20}{61}\)= \(\frac{200}{610}\); 1- \(\frac{411}{611}\)= \(\frac{200}{611}\)
Vì \(\frac{200}{610}\)> \(\frac{200}{611}\)nên \(\frac{41}{61}\)< \(\frac{411}{611}\)
Học tốt ^-^