Question

aflati numerele reale x,y si z, stiind ca x/15=y/6=18/z si 3x+y=10.2​

Answer 1

Răspuns:

Explicație pas cu pas:

x/15=y/6=18/z  ;     3x+y=10.2

x/15=y/6  ;  x=15y/6

3*15y/6  + y =10.2   numitor 6

45y+6y=61.2

51y=61.2

y=1.2

x/15=1.2/6

x=15*1.2/6 =3

x/15=18/z

3z=18*15 =270

z =90