Question

suma a trei nr. naturale consecurive au suma cuprinsa intre 70____________81. Aflati nr. Cauta toate posibilitatile

Answer 1

a+b+c=72
a+a+1+a+2=72
3a=72-3
3a=69
a=23
b=24
c=25

sau:
a+b+c=75
3a+3=75
3a=75-3
3a=72
a=24
b=25
c=26

sau:a+b+c=78
3a+3=78
3a=78-3
3a=75
a=25
b=26
c=27