Răspuns :
22×23 totul supra 2 =
11×23=253
253 supra 23 =11
1/23+ 2/23+ 3/23+............22/23
(1+2+3+.....22.) /23 acelasi numitor
1+2+3+.....22= (22×23)/2 = 11×23(suma lui Gauss)
(11×23) /23=11
22×23 totul supra 2 =
11×23=253
253 supra 23 =11
1/23+ 2/23+ 3/23+............22/23
(1+2+3+.....22.) /23 acelasi numitor
1+2+3+.....22= (22×23)/2 = 11×23(suma lui Gauss)
(11×23) /23=11