Metoda grafica :
a + b + c = 78
a |------|------|
b |------|------| - 2
c |------|
5 segmente egale - 2 = 78
78 + 2 = 80
80 : 5 = 16 (valoarea unui segment egal)
a = 2 × 16 = 32
b = 2 × 16 - 2 = 32 - 2 = 30
c = 16
facem si verificarea :
32 + 30 + 16 = 78
32 = 30 + 2
2 × 16 = 30+2
32 = 32
Raspuns:
a = 32
b = 30
c = 16