(3587-1938)+a =8000
1649+A=8000
A=8000-1649
A=6351
9000-(2714+B)=4832
2714+B=9000-4832
2714+B=4168
B=4168-2714
B=1454
(C-1798)+ 3859=10000
C -1798=10000-3859
C-1798=6141
C =6141+1798
C=7839
(D+2785)-3097=1780
D+2785=1780+3097
D+2785=4877
D=4877-2785
D=2092
Sper ca te am ajutat ! Succes