Question

Thực hiện phép tính một cách hợp lí

a, A=\(\dfrac{3}{5}.\dfrac{5}{4}-\dfrac{3}{5}.\dfrac{1}{4}\)

Answer 1

3/5

Answer 2

3/5

Answer 3

\(\dfrac{3}{5}\)

Answer 4

\(A=\dfrac{3}{5}.\left(\dfrac{5}{4}-\dfrac{1}{4}\right)\)

\(A=\dfrac{3}{5}\)

Answer 5

\(\dfrac{3}{5}\)x(\(\dfrac{5}{4}\)-\(\dfrac{1}{4}\))=3/5 x 1  =3/5

Answer 6

A=\(\dfrac{3}{5}\cdot\dfrac{5}{4}-\dfrac{3}{5}\cdot\dfrac{1}{4}\)

A= \(\dfrac{3}{5}\cdot\left(\dfrac{5}{4}-\dfrac{1}{4}\right)\)

A=\(\dfrac{3}{5}\cdot1\)

A= \(\dfrac{3}{5}\)

Answer 7

\(\dfrac{3}{5}\times\left(\dfrac{5}{4}-\dfrac{1}{4}\right)=\dfrac{3}{5}\times1=\dfrac{3}{5}\)

Answer 8

\(\dfrac{3}{5}\)

Answer 9

=\(\dfrac{3}{5}\)

Answer 10

a, A= 3/5.(5/4-1/4)

      = 3/5.1

      = 3/5

Answer 11

\(A=\dfrac{3}{5}\cdot\dfrac{5}{4}-\dfrac{3}{5}\cdot\dfrac{1}{4}=\dfrac{3}{5}\left(\dfrac{5}{4}-\dfrac{1}{4}\right)=\dfrac{3}{5}\cdot\dfrac{1}{1}=\dfrac{3}{5}\)

Answer 12

a. A= \(\dfrac{3}{5}.\dfrac{5}{4}-\dfrac{3}{5}.\dfrac{1}{4}\)

    A=\(\dfrac{3}{5}.\left(\dfrac{5}{4}-\dfrac{1}{4}\right)\)

    A=\(\dfrac{3}{5}.1=\dfrac{3}{5}\)

 

 

Answer 13

\(\dfrac{3}{5}\)