Răspuns:
(5876-1893)-(86·4+78)=3983-(344+78)=3983-422=3561
235·2+(86·8+102)=470+(688+102)=470+790=1260
7890-(135·6+27·9)=7890-(810+243)=7890-1053=6837
(10000-100·100)+(973·10·0)=(10000-10000)+0=0
