Răspuns :
Răspuns:
1/6-1/7+1/7-1/8+1/8-1/9 +...+1/74-1/75 =1/6-1/75=25/150-2/150=23/150 ; restul s-au redus
Explicație pas cu pas:
Salut,
1/6-1/7+1/7-1/8+1/8-1/9+...+1/74-1/75
=1/6-1/75
=25/150-2/150=23/150
BY 7646
1/6-1/7+1/7-1/8+1/8-1/9+...+1/74-1/75
=1/6-1/75
=25/150-2/150=23/150
BY 7646