Question

cần giúp vs ạ, mình cần gấp

Answer 1

a) \(\dfrac{-15}{-2023}=\dfrac{15}{2023}>0\)

\(\dfrac{3}{-4}< 0\)

\(\Rightarrow\dfrac{-15}{-2023}>\dfrac{3}{-4}\)

b) \(\dfrac{2014}{-2015}< 0\)

\(\dfrac{-5}{-7}=\dfrac{5}{7}>0\)

\(\Rightarrow\dfrac{2014}{-2015}< \dfrac{-5}{-7}\)

c) \(\dfrac{-4162}{3976}< 0\)

\(\dfrac{1}{2}>0\)

\(\Rightarrow\dfrac{-4162}{3976}< \dfrac{1}{2}\)

d) \(\dfrac{-2401}{7693}< 0\)

\(\dfrac{-4}{-7}=\dfrac{4}{7}>0\)

\(\Rightarrow\dfrac{-2401}{7693}< \dfrac{4}{7}\) 

Answer 2

a: \(\dfrac{-15}{-2023}=\dfrac{15}{2023}>0\)

\(\dfrac{3}{-4}< 0\)

Do đó: \(\dfrac{-15}{-2023}>\dfrac{3}{-4}\)

b: \(\dfrac{2014}{-2015}< 0\)

\(\dfrac{-5}{-7}=\dfrac{5}{7}>0\)

Do đó: \(\dfrac{2014}{-2015}< \dfrac{-5}{-7}\)

c: \(-\dfrac{4162}{3976}< 0\)

\(0< \dfrac{1}{2}\)

Do đó: \(-\dfrac{4162}{3976}< \dfrac{1}{2}\)

d: \(\dfrac{-2401}{7693}< 0\)

\(0< \dfrac{4}{7}=\dfrac{-4}{-7}\)

Do đó: \(-\dfrac{2401}{7693}< \dfrac{-4}{-7}\)

e: -17<-4

=>\(\dfrac{-17}{2019}< \dfrac{-4}{2019}\)

=>\(\dfrac{17}{-2019}< \dfrac{-4}{2019}\)

g: \(\dfrac{-15}{-43}=\dfrac{15}{43}\)

mà 15>7

nên \(\dfrac{-15}{-43}=\dfrac{15}{43}>\dfrac{7}{43}\)

h: \(\dfrac{-15}{60}=\dfrac{-15\cdot3}{60\cdot3}=\dfrac{-45}{180}\)

\(\dfrac{-20}{45}=\dfrac{-20\cdot4}{45\cdot4}=\dfrac{-80}{180}\)

Ta có: -45>-80

=>\(-\dfrac{45}{180}>-\dfrac{80}{180}\)

=>\(-\dfrac{15}{60}>-\dfrac{20}{45}\)

k: \(\dfrac{11}{45}>0\)

\(0>-\dfrac{14}{30}\)

Do đó: \(\dfrac{11}{45}>-\dfrac{14}{30}\)

m: \(-\dfrac{17}{15}< -\dfrac{15}{15}=-1\)

\(-1< -\dfrac{5}{18}=\dfrac{5}{-18}\)

Do đó: \(\dfrac{-17}{15}< \dfrac{5}{-18}\)

n: \(-\dfrac{14}{42}< 0\)

\(0< \dfrac{-56}{-28}\)

Do đó: \(\dfrac{-14}{42}< \dfrac{-56}{-28}\)