Question

Care este rezolvarea de la ex:1,2(3)-{[0,(6)-1pe6]+(0,15-1pe4)} multumesc

Answer 1

1,2(3)-{[0,(6)-1/6]+(0,15-1/4)}
1,2(3)=(123-12)/90=111/90=37/30
0,(6)=6/9=2/3
1,2(3)-{[0,(6)-1/6]+(0,15-1/4)}=
=37/30-{[2/3-1/6]+(15/100-1/4)}=
=37/30-{[(4-2)/6]+(3/20-1/4)}=
=37/30-{[(4-2)/6]+(3-5)/20}=
=37/30-(2/6-2/20)=
=37/30-(1/3-1/10)=
=37/30-(10-3)/30=
=37/30-7/30=
=30/30=1