Răspuns :
2x16x(c-250)-1400=12200
(c-250)=(12200+1400):16:2
(c-250)=13600:16:2
(c-250)=850:2
c-250=425
c=425+250
c=675
(c-250)=(12200+1400):16:2
(c-250)=13600:16:2
(c-250)=850:2
c-250=425
c=425+250
c=675
2×16×(c-250)=12200+1400 2×16×(c-250)=13600. 32×(c-250)=13600. (c-250)=13600:32. c-250= 425. c=425+250. c=675