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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