a)
(284:2+68-39)x0=0 Orcie numar ne-ar da in paranteza inmultit cu 0 ne da 0
b)
6+(9x9-9)+199-199x1=
=6+(81-9)+199-199=
=6+72+199-199=
=78+199-199=
=277-199=
=78
c)
180:6+140:8+238:7=
=30+17,5+34=
=.................
d)
(216-80):2+124-(120-69)=
=136:2+124-51=
=68+124-51=
=192-51=
=141
e)
(125+390)x2-204=
=515x2-204=
=1030-204=
=826
