Odpowiedź:
a)
(2x 5,5m) +(2x2,5m) =11m+5m = 16m
5,5m +5,5m+2,5m+2,5m= 16m
b)
(2x3, 5m) + (2x2,45m) =7m+ 4,90m =11, 90m
3,5m +3,5m+2,45m+2,45m= 11,90m
c) (2x4,55m)+ (2x2,55m) = 9,10m + 5,10m = 14,20m
4,55m +4,55m + 2,55m +2,55m = 14,20m
d)(2x3, 75m) +(2x2,25m) =7 ,50m + 4,50m =12m
3, 75m +3,75m+2,25m+2, 25m=12m