c) 0,8(3)=(83-8)/90=75/90 simplificam cu 15
=5/6
5/8+5/6[(2-1/3)6-12/5:3/10]=
5/8+5/6[(6-1 totul pe 3)6-12/5x10/3]=
5/8+5/6(5/3x6-8)= [am simplificat pe 10 si 5 si pe 12 si 3]
5/8+5/6x(5x2-8)= [am simplificat 6 cu 3]
5/8+5/6x2=
5/8+10/6= [numitor comun 24]
(5x3+10x4)/24=
(15+40)/24=55/24
d)[(2/3-5/12)x24-0,45]:(7,25-3,92)=
[(2x4-5)/12x24-45/100]:3,33=
(3/12x24-9/20]:333/100= [am simplificat pe 45 si 100 cu 5]
(3x2-9/20)x100/333=
(6-9/20)x100/333= [numitor comun 20]
(20x6-9)/20x100/333=
(120-9)/20x100/333=
111/20x100/333= [simplificam pe 111 si 333 ,si pe 20 si 100]
5/3
