Question

Answer 1

Giúp mình với

Answer 2

Bài 1 : 

\(\dfrac{-3}{8}và\dfrac{7}{4}=\dfrac{-3}{8};\dfrac{14}{8}\)

Bài 2

 

\(\dfrac{-11}{12}và\dfrac{-3}{20}\)

\(\dfrac{-11}{12}=\dfrac{-11}{12}\times\dfrac{10}{10}=\dfrac{-110}{120}\) 

\(\dfrac{-3}{20}=\dfrac{-3}{20}\times\dfrac{6}{6}=\dfrac{-18}{120}\)

\(\) \(\)

=> \(\dfrac{-110}{120}>\dfrac{-18}{120}hay\dfrac{-11}{12}>\dfrac{-3}{20}\)

Answer 3

bài 1

-3/8=-12/32

7/4=56/32

bài 2

BCNN{(12,20)= 60

-11/12=-55/60

-3/20=-9/60

=>-3/60>-11/12