Răspuns :
x+y+z=84
x=6+4
y=4x
6+4+((4+6)·4)+z=84
10+(10·4)+z=84
10+40+z=84
50+z=84
z=84-50
z=34
x=10
y=40
x=6+4
y=4x
6+4+((4+6)·4)+z=84
10+(10·4)+z=84
10+40+z=84
50+z=84
z=84-50
z=34
x=10
y=40