Question

Quy đồng mẫu các phân số sau:

a) \(\dfrac{3}{4}\), \(\dfrac{1}{-9}\),\(\dfrac{-5}{5}\)                       b)\(\dfrac{1}{-7}\), \(\dfrac{-1}{-8}\), \(\dfrac{3}{4}\)

 

c)\(\dfrac{1}{3}\),\(\dfrac{-1}{5}\), \(\dfrac{1}{-10}\)                       d)\(\dfrac{5}{14}\),\(\dfrac{-3}{7}\),\(\dfrac{3}{-4}\)

e)\(\dfrac{4}{11}\),\(\dfrac{3}{-5}\),\(\dfrac{-1}{-2}\)                   g)\(\dfrac{7}{15}\),\(\dfrac{-3}{8}\),\(\dfrac{-2}{3}\)        

Answer 1

a: 3/4=135/180

-1/9=-20/180

-5/5=-1=-180/180