Antwort
x+y+z=1280
(y-70)+y+y/2=1280
y-70+y+y/2=1280
2,5y=1210
y=484
x=484-70=414
z=484/2=242
x+y+z=1280
(y-70)+y+y/2=1280
y-70+y+y/2=1280
2,5y=1210
y=484
x=484-70=414
z=484/2=242