a) 1+28+2+5++4=
1+5+2+4=
7+7+4=
14+3=
17
б) 5-3.15+7=
5-3.15+7=
12-3.15=
13-3.15=
13-3=
9
в) 8-(4+2)=
8-(4+2)=
8-6=
2=
2
г) (18+3)-7=
(18+3)-7=
21-7=
14=
14
a) 1+28+2+5++4=
1+5+2+4=
7+7+4=
14+3=
17
б) 5-3.15+7=
5-3.15+7=
12-3.15=
13-3.15=
13-3=
9
в) 8-(4+2)=
8-(4+2)=
8-6=
8-6=
2=
2
г) (18+3)-7=
(18+3)-7=
21-7=
14=
14