A+b+c+D= 2099
b= a+3
C=b/3
3c=a+3
C= a/3 + 1
D=a+5
a+a+3+a/3 +1 + a+5 =2099
=> 3a+ a/3= 2099-9= 2090
9a/3+ a/3= 2090
10a/3= 2090
10a= 2090x3
a= 2090x3/10
a= 209x3 = 627
B= 627+3= 630
C= 630:3= 210
D= 627+5= 632
Proba?
627+630+210+632 =2099
Sper ca te-am ajutat !