Răspunsuri

2014-04-06T11:18:03+03:00
Notezi numerele cu a si b
a + b = 80
a = a/2 + 2b ⇒ 2b = a - a/2 = a/2 => b = a/4
a + a/4 = 80 => 5a/4 = 80 => 5a = 320 => a = 64
2014-04-06T11:35:35+03:00
A+b=80    
a=80:2
a=  40
a+b=80
40+b=80
b=80-40
b=  40
VERIFICARE40+40=80
Mult Succes!