Răspuns :
a-b=(a+b):4
a-b=28 => a= b + 28
28=(a+b):4
112=a+b
112= b+28 + b
112= 2b + 28
84 = 2b => b=42
a= 70
a-b=28 => a= b + 28
28=(a+b):4
112=a+b
112= b+28 + b
112= 2b + 28
84 = 2b => b=42
a= 70
suma numerelor este 4*28=112
fie a si b numerele
a /------/
b/------/.....28.. suma 112
112-28=84 (suma a 2 segmente egale)
84:2=42 (un segment)
a=42
b=42+28=70
verificare 42+70=112
fie a si b numerele
a /------/
b/------/.....28.. suma 112
112-28=84 (suma a 2 segmente egale)
84:2=42 (un segment)
a=42
b=42+28=70
verificare 42+70=112