Răspuns :
Numerele pare consecutive
1 nr /-----/
2 nr /-----/+2
Dublul sumei celor doua nr pare consecutive:
/-----/------/
/-----/------/+2+2
total 84
egalizam segmentele
4segmente+4=84
4segmente=84-80=80
1segment=80:4=20
primul numar = 1 segment = 20
al doilea numar = 1 segment + 2 = 20 + 2 = 22
(a+b)*2=84
a;b=> nr pare consecutive...=> b=a+2
a)|__|
b)|__|+2
------------
2a+2=84:2
2a+2=84:2
2a+2=42
2a=42-2
2a=40
a=40:2
a=20
b=20+2
b=22
(20+22)*2=
=42*2
=84