Răspuns :
a+b+c=348
c=a+b+10
a+b=?
b=a+1
a+a+1+a+b+10=348
3a+11+a+1=348
4a=348-12
4a=336
a=336:4
a=84(primul copil)
b=85(al doilea copil)
c=84+85+10=179(al treilea copil)
c=a+b+10
a+b=?
b=a+1
a+a+1+a+b+10=348
3a+11+a+1=348
4a=348-12
4a=336
a=336:4
a=84(primul copil)
b=85(al doilea copil)
c=84+85+10=179(al treilea copil)
a+b+c=348 a) |___|
c=a+b+10 b) |___|+1
a si b=> 2 nr. consecutive c) |___|___|+1+10
--------------------------------- ------------------------------
a=?b=?c=? a+b+c=348
348=a+a+1+a+a+1+10
348=4a+12
4a=348-12
4a=336
a=336:4
a=84 (primul copil)
b=85 ( al 2-lea copil)
c=84+85+10
c=179 (al 3-lea copil)
84+85+179=348
c=a+b+10 b) |___|+1
a si b=> 2 nr. consecutive c) |___|___|+1+10
--------------------------------- ------------------------------
a=?b=?c=? a+b+c=348
348=a+a+1+a+a+1+10
348=4a+12
4a=348-12
4a=336
a=336:4
a=84 (primul copil)
b=85 ( al 2-lea copil)
c=84+85+10
c=179 (al 3-lea copil)
84+85+179=348