a + b = 4×(a - b)
a +b = (a-b) + 42 =>(a+b) - (a-b) = 42
(a+b) |____|____|____|____|
(a-b) |____|
4 segmente egale - 1 segment egal = 3 segmente egale = 42
42 : 3 = 14 ( un segment egal)
a +b = 4 × 14 = 56
a - b = 14 => a = b + 14
a |____|+14
b |____|
avem 2 segmente egale +14 = 56
56 - 14 = 42
42 : 2 = 21 (un segment egal)
a = 21 + 14 = 35
b = 21
Verificare:
35 + 21 = 56
35 - 21 = 14
56 = 4×14
56 - 14 = 42
Raspuns:
a = 35
b = 21
