Question

 giúp em bài 2 được không ạ 🥺💞 

Answer 1

a) 4/6                          b) 2/3 

c) -20/24                        d) 13/24
học tốt nha

Answer 2

-Mình gợi ý 1 câu nhé.

Bài 2:

a) \(A=\dfrac{3}{8}.\dfrac{3}{19}+\dfrac{3}{8}.\dfrac{16}{19}=\dfrac{3}{8}.\left(\dfrac{3}{19}+\dfrac{16}{19}\right)=\dfrac{3}{8}.\dfrac{19}{19}=\dfrac{3}{8}\)

Answer 3

Câu 2: 

b: \(B=\dfrac{2}{5}\left(\dfrac{13}{17}+\dfrac{4}{17}\right)+\dfrac{3}{5}=\dfrac{2}{5}+\dfrac{3}{5}=1\)

c: \(C=\dfrac{2}{5}\left(\dfrac{1}{3}-\dfrac{1}{6}+\dfrac{1}{3}\right)=0\)

d: \(D=\dfrac{5}{3}+\dfrac{4}{27}-\dfrac{11}{9}=\dfrac{45}{27}+\dfrac{4}{27}-\dfrac{33}{27}=\dfrac{15}{27}=\dfrac{5}{9}\)