Question

Rút gọn rồi tính các phân số sau:

8/24 - 5/25         18/21 - 12/27

giúp mình với, trả lời mình tick cho nhé

Answer 1

giúp mình với mọi người ơi

Answer 2

\(\dfrac{8}{24}-\dfrac{5}{25}=\dfrac{1}{3}-\dfrac{1}{5}=\dfrac{5}{15}-\dfrac{3}{15}=\dfrac{2}{15}\\ \dfrac{18}{21}-\dfrac{12}{27}=\dfrac{6}{7}-\dfrac{4}{9}=\dfrac{54}{63}-\dfrac{28}{63}=\dfrac{26}{63}\)

Answer 3

1/3-1/5= 2/15

6/7-4/9= 26/63

Answer 4

\(\dfrac{1}{3}-\dfrac{1}{5}=\dfrac{5}{15}-\dfrac{3}{15}=\dfrac{2}{15}\)

\(\dfrac{6}{7}-\dfrac{4}{9}=\dfrac{54}{63}-\dfrac{28}{63}=\dfrac{26}{63}\)

Answer 5

8/24-5/25= 1/3-1/5= 2/15

18/21-12/27= 6/7-4/9= 26/63

 

Answer 6

8/24-5/25= 1/3-1/5= 2/15

18/21-12/27= 6/7-4/9= 26/63