wiek Julek-xwiek asi-ywiek michala-zx+y=z+6x+7=zy+2=zx+y=y+2+6x=8z=8+7=15y+2=15y=13suma lat=15+13+8=36 lat
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wiek Julek-x
wiek asi-y
wiek michala-z
x+y=z+6
x+7=z
y+2=z
x+y=y+2+6
x=8
z=8+7=15
y+2=15
y=13
suma lat=15+13+8=36 lat