Question

Quy đồng mẫu các phân số sau :

3/8 và 5/27

-2/9 và 4/25

1/15 và -6

11/120 và 7/40

24/146 và 6/13

ai nhanh like !

Answer 1

\(\dfrac{3}{8}\)=\(\dfrac{3.27}{8.27}\)=\(\dfrac{81}{216}\),\(\dfrac{5}{27}\)=\(\dfrac{5.8}{27.8}\)=\(\dfrac{40}{216}\)

\(\dfrac{-2}{9}\)=\(\dfrac{-2.25}{9.25}\)=\(\dfrac{-50}{225}\),\(\dfrac{4}{25}\)=\(\dfrac{4.9}{25.9}\)=\(\dfrac{36}{225}\)

\(\dfrac{1}{15}\)=\(\dfrac{1}{15}\),-6=\(\dfrac{-6.15}{1.15}\)=\(\dfrac{-90}{15}\)

\(\dfrac{11}{120}\)=\(\dfrac{11}{120}\),\(\dfrac{7}{40}\)=\(\dfrac{7.3}{40.3}\)=\(\dfrac{21}{120}\)

\(\dfrac{24}{146}\)=\(\dfrac{24.13}{146.13}\)=\(\dfrac{312}{1898}\),\(\dfrac{6}{13}\)=\(\dfrac{6.146}{13.146}\)=\(\dfrac{876}{1898}\)