d=40.602
c=40.602-600
c=40.002
b=40.602+40.002
b=80.604
a=40.002+400.002
a=440.004
a+c-(b-d)=440.004+40.002-(80.604-40.602)=4 80.006-40.002-440.004
Sper ca te-am ajutat!Succes!
