1 roman +2roman+ 3 roman =1026tone
facem segmentele
1roman |____|
2roman|____|____|____|
3roman|____|____|____|+53tone....acolada la toate cele 3 segmente si scrii 1026 tone
7p+53=1026
7p=1026-53
7p=973
p=973÷7
p=139 tone prima brigadă
139×3=417 tone a doua brigadă
417+53=470 tone a treia brigadă
v: 139+417+471=1026 tone