Răspuns :
fie a,b,c nr naturale cautate
a+b = 38
b+c = 36
a+c = 44
_____________________- [ se aduna cele 3 relatii ]
a+b+b+c+a+c=38+36+44
2a+2b+2c=118 | : 2
a+b+c = 59
38+c = 59
c = 59-38
c = 21.
b+21=36 ⇒ b = 36-21 ⇒ b = 15.
a+ 15=38 ⇒ a = 38-15 ⇒a = 23 .
a+b = 38
b+c = 36
a+c = 44
_____________________- [ se aduna cele 3 relatii ]
a+b+b+c+a+c=38+36+44
2a+2b+2c=118 | : 2
a+b+c = 59
38+c = 59
c = 59-38
c = 21.
b+21=36 ⇒ b = 36-21 ⇒ b = 15.
a+ 15=38 ⇒ a = 38-15 ⇒a = 23 .