Răspuns :
1/946+2/946+...43/946=1/946x(1+2+3+...43)
(1+2+3+...43)=44x43/2=946
1/946+2/946+...43/946=946/946=1
(1+2+3+...43)=44x43/2=946
1/946+2/946+...43/946=946/946=1