Răspuns :
{x;y;z}d.p. {4;5;7}->x/4=y/5=z/7=(x+y+z)÷(4+5+7)=64÷16=4
x÷4=4
x=16
y÷5=4
y=20
z÷4=7
z=28
x÷4=4
x=16
y÷5=4
y=20
z÷4=7
z=28
x/4 =y/5 =z/7
x+y+z =64
x/4+y/5+z/7 =x+y+z /4+5+7 =64/16 =4
x/4 =4 ; x =4*4 =16
y/5 =4 ; y =5*4 =20
z/7 =4 ; z =7*4 =28
v ; 16+20+28 =64
x+y+z =64
x/4+y/5+z/7 =x+y+z /4+5+7 =64/16 =4
x/4 =4 ; x =4*4 =16
y/5 =4 ; y =5*4 =20
z/7 =4 ; z =7*4 =28
v ; 16+20+28 =64