Question

4/5 de n =20 ayar el valor den

Answer 1

4/5·n=20
4n=20·5
4n=100
n=100/4
n=25

Answer 2

El número = n
Resolvemos : 

4/5 de n = 20

n * 4/5 = 20

4n/5 = 20

4n = 20 * 5

4n = 100

n = 100/4

n = 25

Solución : 

n = 25

4/5 de 25 es = 20