\(=\dfrac{5}{5}\times\dfrac{4}{5}=1\times\dfrac{4}{5}=\dfrac{4}{5}\)
kết quả 1:
23/25
kết quả 2:
0,92
\(\dfrac{3}{5}+\dfrac{2}{5}\text{×}\dfrac{4}{5}=\dfrac{3}{5}+\dfrac{8}{25}=\dfrac{17}{25}\)
\(\dfrac{3}{5}+\dfrac{2}{5}\text{×}\dfrac{4}{5}=\dfrac{3}{5}+\dfrac{8}{25}=\dfrac{23}{25}\)