Question

Viet phan so : \(\dfrac{5}{7}\) thanh cac phan so co mau so lan luot la: 14 ; 28 ; 35 ; 105

Answer 1

10/14

20/28

25/35

75/105

Answer 2

\(\dfrac{10}{14};\dfrac{20}{28};\dfrac{25}{35};\dfrac{75}{105}\)

Answer 3

\(\dfrac{5}{7}=\dfrac{5\times2}{7\times2}=\dfrac{10}{14};\dfrac{5\times4}{7\times4}=\dfrac{20}{28};\dfrac{5\times5}{7\times5}=\dfrac{25}{35};\dfrac{2\times15}{7\times15}=\dfrac{30}{105}\)

Answer 4

10/14 20/28 25/35 75/105