Zy + 74 = Ay => Zy = Ay - 74
% protoni = Zx/Ax * 100
Zx = 43,75*Ax/100 = 0,4375*Ax
Zx = 0,66037*Zy
Ax = 0,62992*Ay => Zx = 0,4375*0,62992*Ay = 0,27559*Ay
= 0,27559*(Zy + 74) = 0,66037*Zy
0,66037Zy = 20,39366 + 0,27559Zy
Zy = 53 - Iodul
Zx = 53*0,66037 = 35 - Bromul