1) \(\dfrac{3}{4}< \dfrac{4}{4}=1\)
\(\dfrac{5}{4}>\dfrac{5}{5}=1\)
\(=>\dfrac{3}{4}< 1< \dfrac{5}{4}\)
3) \(-5>-6\)
\(=>-\dfrac{5}{9}>-\dfrac{6}{9}\)
5) \(7< 9\)
\(=>\dfrac{2}{7}>\dfrac{2}{9}\)
2) \(\dfrac{5}{6}=1-\dfrac{1}{6}\)
\(\dfrac{4}{5}=1-\dfrac{1}{5}\)
Mà: \(6>5=>\dfrac{1}{6}< \dfrac{1}{5}=>1-\dfrac{1}{6}>1-\dfrac{1}{5}\)
\(=>\dfrac{5}{6}>\dfrac{4}{5}\)
4) \(-\dfrac{9}{17}>-\dfrac{9}{9}=-1\)
\(-\dfrac{3}{2}< -\dfrac{3}{3}=-1\)
\(=>-\dfrac{3}{2}< -1< -\dfrac{9}{17}\)
6) \(\dfrac{-5959}{4242}=\dfrac{-59\cdot101}{42\cdot101}=\dfrac{-59}{42}\)
1) Do 3 < 5 nên
2) Ta có:
Do 25 > 24 nên:
1) 54>55=154>55=1
=>−59>−69=>−59>−69
5) 7<97<9
56=1−1656=1−16
6>5=>16<15=>1−16>1−156>5=>16<15=>1−16>1−15
−917>−99=−1−917>−99=−1
=>−32<−1<−917=>−32<−1<−917
6)
1) 54>55=154>55=1
=>−59>−69=>−59>−69
5) 7<97<9
56=1−1656=1−16
6>5=>16<15=>1−16>1−156>5=>16<15=>1−16>1−15
−917>−99=−1−917>−99=−1
=>−32<−1<−917=>−32<−1<−917
6)
