Theo đề bài
\(\overline{abc,d}-\overline{a,bcd}=583,704\)
\(\Rightarrow100x\overline{a,bcd}-\overline{a,bcd}=583,704\)
\(\Rightarrow99x\overline{a,bcd}=583,704\Rightarrow\overline{a,bcd}=583,704:99=5,896\Rightarrow\overline{abc,d}=589,6\)
Tổng hai số là
\(\overline{589,6}+5,896=595,496\)