Răspuns:
Explicație pas cu pas:
(2017-1):3+1=2016:3+1=672+1=673
(2017+1)×673:2=2018×673:2=1358114:2=679057
(2018-2):3+1=2016:3+1=672+1=673
(2018+2)×673:2=2020×673:2=1359460:2=679730
