Question

Tính bằng cách thuận tiện nhất

3/2 x 4/7 + 3/7 x 3/2

Answer 1

= 3/2 x (4/7 + 3/7)

= 3/2 x   1

= 3/2

Answer 2

3/2 x ( 4/7 + 3/7 )

= 3/2 x 1

= 3/2

Answer 3

\(\dfrac{3}{2}\times\dfrac{4}{7}+\dfrac{3}{7}\times\dfrac{3}{2}\\ =\dfrac{3}{7}\times\dfrac{4}{2}+\dfrac{3}{7}\times\dfrac{3}{2}\\ =\dfrac{3}{7}\times\left(\dfrac{4}{2}+\dfrac{3}{2}\right)\\ =\dfrac{3}{7}\times\dfrac{7}{2}\\ =\dfrac{3}{2}\)

Answer 4

\(=\dfrac{3}{2}\times\left(\dfrac{4}{7}+\dfrac{3}{7}\right)\)

\(=\dfrac{3}{2}\times1\)

\(=\dfrac{3}{2}\)

Answer 5

= 3/2