Schimband locul unui singur betisor,din fiecare exercitiu,puteti obtine egalitati adevarate

IV + I = V → ( 4 + 1 = 5 )
VIII + II = X → ( 8 + 2 = 10 )
L + I = LI → ( 50 + 1 = 51 )
XXI - X = XI → ( 21 - 10 = 11 )
LX + VI = LXVI → ( 60 + 6 = 66 )