Notam:
a = bomboane prima cutie
b = bomboane a 2-a cutie
a+b = 50
a-6 = 3×(b-8)
a-6 = 3×b -24
a = 3×b -18
a |____|____|____|-18
b |____|
avem 4 segmente egale-18 = 50
50+18 = 68
68:4 = 17 ( un segment egal)
a = 3×17-18 = 51-18 = 33
b = 17
Verificare:
33+17 = 50
33-6 = 3×(17-8)
27 = 3×9
27 = 27
33 = bomboane prima cutie
17 = bomboane a 2-a cutie