12 ;
+5;
45 ;
+20
45 ;
5
24 ( 10);
+20,
6;
5,
90 ( 10);
(/2)
14000;
, /2
14000;
(/3)
1,77;
,
15;
,
100;
-10 +35;
5
24 ( -10);
+20,
6;
5,
90 ( -10);
