Am sa-ti raspund doar pentru punctul a).....Moldoveanu =.....
(59xa+2023):50+2=2760
(59xa+2023):50+2-(2760)=0
59a+2023 /50 +2-2760=0
2=2/2 =2x50/50
(59a+2023)+2x50 /50 =59a+2123/50
59a+2123/50 -2760=0
2760=2760/1=2760x50/50
(59a+2123)-(2760x50)/50=59a+135877/50
59-135877 =59x(a-2303)
59x(a-2303)/50=0
59x(a-2303)/50 x50=0x50
59xa-2303=0
59=0
a-2303=0
a=2303
