.
.
6.7.2. .
:
-12-6, 3 4.
-102, .
-47, -3.
-12-6.
-12-6 , . -102, .
, .
Ұ = 955 ( 3-117 Ұ = 975) " . ", " . " "Ұ n . ". 955 (975) . 980...990 .
.
.
:
87% (N) 880 2-6;
. 820...850;
, 30 .
:
;
"" "";
" . ", " . " " Ұ n .", 820...850.
3%. .
-3.