Răspuns :
a-1356-2452= 4191 a=1356+2452+4191 a=7999 P:7999-1356-2452=4191 b-2356-1848=1578 b=2356+1848+1578 b=5782 5782-2356-1848=1578 c- 4851=1353+3567 c=1353+3567-4851 c=69