Răspuns :
Fie a, b c cele 3 nr
a+b+c=112
b=2a rezulta ca a=b/2
b=c-17 rezulta ca c=b+17
atunci, b/2+b+b+17=112
b/2+2b=95
5b=190
b=38
a=19
c=55
a+b+c=112
b=2a rezulta ca a=b/2
b=c-17 rezulta ca c=b+17
atunci, b/2+b+b+17=112
b/2+2b=95
5b=190
b=38
a=19
c=55
a=|___|
b=|___|___|
c=|___|___|..+17..|
Suma lor este: 5×|___|+17 = 112 ⇒ 5×|___| = 112-17=95
⇒ |___| = 95 : 5 = 19
R: a = 19 ; b = 2×19 = 38 si c = 38+17 = 55 .
b=|___|___|
c=|___|___|..+17..|
Suma lor este: 5×|___|+17 = 112 ⇒ 5×|___| = 112-17=95
⇒ |___| = 95 : 5 = 19
R: a = 19 ; b = 2×19 = 38 si c = 38+17 = 55 .