Question

Determina el valor de las incognitas si 4/5=m/n siendo m+n =27

Answer 1

4/5=m/n -> 4*n = 5*m
>m+n=27
>5*m+5*n=27*5
>4*n+5*n=27*5
>9*n=27*5
>n=15...
>5*m=4*15
>m=12...