a+b+c=69m
69m-17m-40 dm-2100cm=69m-17m-4m-21m=27m
27m/3=9m lungimele egale ale celor trei baloturi
cati metri de stofa era la inceput in primul balot ?
9m+17m=26m
2-------------------------------------------in al doilea balot?
9m+40dm=9+4m=13m
3...........................................................in al treilea balot?
9m+2100cm=9m+21m=30m
Verificare
26m+13m+30m=69m