Question

5/9  nhân 13/28 +13/28 nhân4/9

 

Answer 1

13/28nhan(5/9+4/9)

13/28nhan1=13/28

Answer 2

5/9x13/28+13/28x4/9

=(5/9+4/9)x13/28

=1x13/28

=13/28

Answer 3

5/9  x 13/28 +13/28 x 4/9 

= 13/28 x ( 5/9 + 4/9 )

= 13/28 x 1

= 13/28

Answer 4

\(\frac{5}{9}.\frac{13}{28}+\frac{13}{28}.\frac{4}{9}\)

\(=\frac{13}{28}\left(\frac{5}{9}+\frac{4}{9}\right)\)

\(=\frac{13}{28}.1\)

\(=\frac{13}{28}\)

k nha

Answer 5

5/9x13/28+13/28x4/9

=13/28x(5/9+4/9)

=13/28x1

=13/28

bấm đúng đi