Răspuns:
..a+b+c= 2020
2× (c-b)=a-14
2c-2b+14
3a =b -106
2c -2b+14+b+c=2020
3c-b=2020-14
3c-b=2006
3a+3b+3c= 6060
b-106+3b +3c =6060
4b +3 c =6060+106=6166
(2)-(1)=4b+3c-3c+b
6166-2006= 5b= 4160
b=4160÷5
b=832
a= (b-106)÷3=(832-106):3=726÷3
a= 242
c= 2020- ( 832+242)=
c=2020-1074
c= 946
242+832+946= 2020