Răspuns :
x+y+z=75
x+y=47
x=1/4*z
z=x+y+z-x-y
z=75-47
z=28
x=28/4
x=7=>y=47-47=>y=40
x=7
y=40
z=28
x+y=47
x=1/4*z
z=x+y+z-x-y
z=75-47
z=28
x=28/4
x=7=>y=47-47=>y=40
x=7
y=40
z=28
x+y+z=75
x+y=47
x=1/4*z
z=x+y+z-x-y
z=75-47
z=28
x=28/4
x=7=>y=47-47=>y=40
x=7
y=40
z=18
x+y=47
x=1/4*z
z=x+y+z-x-y
z=75-47
z=28
x=28/4
x=7=>y=47-47=>y=40
x=7
y=40
z=18