Răspuns :
(a+11130)*30+4=2005:5
(a+11130)*30=401-4
a+11130=397:30
a+11130=13,2(3)
a=13,2(3)-11130
(a+11130)*30=401-4
a+11130=397:30
a+11130=13,2(3)
a=13,2(3)-11130