Question

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Answer 1

câu 2 :
\(\dfrac{-55}{132}=\dfrac{\left(-55\right):12}{132:12}=\dfrac{-5}{12}\)

câu 3:

a) <                           b) <

câu 4 :

a)\(\dfrac{5}{16}-\dfrac{5}{24}=\dfrac{5}{48}\)                 

b) \(\dfrac{-5}{8}+\dfrac{12}{7}+\dfrac{13}{8}+\dfrac{2}{7}=\left(\dfrac{-5}{8}+\dfrac{13}{8}\right)+\left(\dfrac{12}{7}+\dfrac{2}{7}\right)=1+2=3\)