👤

Va rog !Sa fie rezolvarea completa!Multumesc anticipat.
2*{2,5-[0,4*(28,2*1,5-28,1)-0,08]/2,8}



Răspuns :

2*{2,5-[0,4*(28,2*1,5-28,1)-0,08]/2,8}=
2*{2,5-[0,4*(42.3-28,1)-0,08]/2,8}=
2*[2,5-(0,4*14.2-0,08)/2,8]=
2*[2.5-(5.68-0.08)/2.8]=
2*(2.5-5.6/2.8)=
2*(2.5-2)=
2*0.5=
1