Question

4/5x1/2+3/2x4/5+4/5

Answer 1

\(=\dfrac{4}{5}\cdot\left(\dfrac{1}{2}+\dfrac{3}{2}+1\right)=\dfrac{4}{5}\cdot3=\dfrac{12}{5}\)

Answer 2

\(\dfrac{4}{5}\times\dfrac{1}{2}+\dfrac{3}{2}\times\dfrac{4}{5}+\dfrac{4}{5}=\dfrac{4}{5}\times\left(\dfrac{1}{2}+\dfrac{3}{2}+1\right)=\dfrac{4}{5}\times3=\dfrac{12}{5}\)

Answer 3

\(\dfrac{4}{5}.\dfrac{1}{2}+\dfrac{3}{2}.\dfrac{4}{5}+\dfrac{4}{5}=\dfrac{4}{5}.\left(\dfrac{1}{2}+\dfrac{3}{2}+1\right)=\dfrac{4}{5}.3=\dfrac{12}{5}\)

Dấu "." là dấu nhân nhé

Answer 4

\(\dfrac{4}{5}\times\dfrac{1}{2}+\dfrac{3}{2}\times\dfrac{4}{5}+\dfrac{4}{5}=\dfrac{4}{5}\times\left(\dfrac{1}{2}+\dfrac{3}{2}+1\right)\\ =\dfrac{4}{5}\times3=\dfrac{12}{5}\)

Answer 5