:
1. ;
2. .
, .
, , :
1) ;
2) , ;
3) , .
.
. , . :
1 ,
2 .
.
.
:
Ø 5 80 ./ = 400 .
Ø 11 100 ./ = 1100 .
Ø 8 150 ./ = 1200 .
= 2700 .
D.
:
Ø 5 80 ./ = 400 .
Ø 11 100 ./ = 1100 .
Ø D 9 120 ./ = 1080 .
= 2580 .
:
2700 2580 = +120 .
: , .. 120 . = × 120 .
, .
, .
. :
= ×
, , .
- | - | - | (8-5) | (11-8) | (5-11) | ||||||||
- | -10 | -10 | |||||||||||
-100 | +50 | +50 | |||||||||||
D | 9,5 | 9,5 | +60 | -19 | -41 | ||||||||
- | - | - | - | - | - | - | -40 | +21 | -19 |
, , ().
|
|
: 19 ., :
ü = = 2540 2580 = -40;
ü = = 2561 2540 = +21.
. , 3000 . = 3000×19 = 57000 . = 2000×120 = 360000 .
= 417000 ., :
= 3000×(-40) = -120000;
= 3000×(+21) = +63000;
= 3000×(-120) = -360000.
= -417000 .
, .
.
, .
= +50+60 = +110 .
3000×(+110) = 330000 . .
, , , = .