Răspuns :
a+b+c=39
b=a+1
c=a+1+1
a+(a+1)+(a+1+1)=39
3a=39-3=36
a=36:3
a=12
b=12+1
b=13
c=12+1+1
c=14
12+13+14=39
b=a+1
c=a+1+1
a+(a+1)+(a+1+1)=39
3a=39-3=36
a=36:3
a=12
b=12+1
b=13
c=12+1+1
c=14
12+13+14=39
a+b+c=39
b=a+1
c=a+1+1
a+(a+1)+(a+1+1)=39
3a=39-3=36
a=36:3
a=12
b=12+1
b=13
c=12+1+1
c=14
12+13+14=39
b=a+1
c=a+1+1
a+(a+1)+(a+1+1)=39
3a=39-3=36
a=36:3
a=12
b=12+1
b=13
c=12+1+1
c=14
12+13+14=39