Răspuns :
x+y = 56
y+z =88
x+z =80
2x+2y+2z=56+88+80
2x+2y+2z=224
2(x+y+z) =224
x+y+z =224:2
x+y+z =112
x+y=56=> z=112-56=56
y+z=88=>x=112-88=24
x+z=80=> y=112-80=32
y+z =88
x+z =80
2x+2y+2z=56+88+80
2x+2y+2z=224
2(x+y+z) =224
x+y+z =224:2
x+y+z =112
x+y=56=> z=112-56=56
y+z=88=>x=112-88=24
x+z=80=> y=112-80=32
x+y=56=> z=112-56=56
y+z=88=>x=112-88=24
x+z=80=> y=112-80=32
y+z=88=>x=112-88=24
x+z=80=> y=112-80=32