Question

So sánh : -18/91 và -23/114

               -22/35   và -103/177

Answer 1

\(\text{a)}\)\(\frac{-18}{91}\)\(\text{và}\)\(\frac{-23}{114}\)

  \(\text{ Ta có :}\)\(\frac{18}{91}< \frac{18}{90}=\frac{1}{5}=\frac{23}{115}< \frac{23}{114}\)

   \(\text{Do đó : }\)\(\frac{-18}{91}>\frac{-23}{114}\)

\(\text{b)}\)\(\frac{-22}{35}\)\(\text{và}\)\(\frac{-103}{177}\)

       \(\text{Ta có :}\)\(\frac{22}{35}=\frac{110}{175}>\frac{103}{125}>\frac{103}{177}\)

      \(\text{Do đó :}\)\(\frac{-22}{35}< \frac{-103}{177}\)