1/3 x 5/8 + 5/8 x 2/3 = 5/8 x { 1/3 + 2/3} = 5/8 x 9/9 =5/8 x1=5/8 nhé cho mình 1 tích
chúc bạn học giỏi
\(\dfrac{1}{3}\times\dfrac{5}{8}+\dfrac{5}{8}\times\dfrac{2}{3}=\dfrac{5}{8}\times\left(\dfrac{1}{3}+\dfrac{2}{3}\right)=\dfrac{5}{8}\times1=\dfrac{5}{8}\)