a + b = 4×(a - b)
a - b = (a + b) -24
(a + b) -(a-b) = 24
(a + b) |_____|_____|_____|_____|
(a - b) |_____|
4 segmente egale - 1 segment egal = 3 segmente egale = 24
24 : 3 = 8 (un segment)
a + b = 4 × 8 = 32
a - b = 8 => a = b+8
a |______|+8
b |______|
avem 2 segmente egale +8 = 32
32 - 8 = 24
24 : 2 = 12 ( un segment)
a = 12 + 8 = 20
b = 12
Verificare:
20+12 = 4×(20-12)
32 = 4×8
32 = 32
a = 20
b = 12
