Răspuns :
a = Ana
b = Irina
a + b = 25
a = 4b
5b = 25 ⇒ b = 5
a = 4 × 5 ⇒ a = 20
b = Irina
a + b = 25
a = 4b
5b = 25 ⇒ b = 5
a = 4 × 5 ⇒ a = 20
/-----------/irina
/-----------/------------/----------/---------/ana
1+4=5 segmente egale
25:5=5 un segment SAU irina
5x4=20 Ana
proba 20+5=25
/-----------/------------/----------/---------/ana
1+4=5 segmente egale
25:5=5 un segment SAU irina
5x4=20 Ana
proba 20+5=25