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4,5-0,9=3,6
4,5+0,9=5,4
5,4-3,6=1,8
4,5m-1,8m=2,7m
4,5m+1,8m=6,3m
spr:2,7m+6,3m=9m
Odp: Jedna taśma ma długość 2,7m,a druga 6,3m.
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