Răspuns :
numerele sunt
133 135 137
am aflat
405:3=135
135-2=133
135+2=137
133 135 137
am aflat
405:3=135
135-2=133
135+2=137
a+1+a+3+a+5=405
3a+1+3+5=405
3a+1+3=405-5
3a+1+3=400
3a+1=400-3
3a+1=397
3a=397-1
3a=396
a=132
a+1=132+1=133
a+3=132+3=135
a+5=132+5=137
3a+1+3+5=405
3a+1+3=405-5
3a+1+3=400
3a+1=400-3
3a+1=397
3a=397-1
3a=396
a=132
a+1=132+1=133
a+3=132+3=135
a+5=132+5=137