() , :
I. ( , , ).
II. ( ).
III. ( ).
I. , () , . , () .
( ) - ().
= .
, = + + .
, . , . ( > 3/4 .)
, . . ( , . . ).
,
, .
II. , .
= + = NI + + = + + + + + +.
, , :
= + + + + + + = + + ( ) + ( , , ( , )) = + + + + .
III. .
.
1. (C consumption). ) ) , . .
2. (G government). ) , ) (, , , , . .). .
3. . ) , . . , ) () , . . , , .
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I (investment). I = I + .
4. () -,
(T.b. trade balance).
= + G + I + = + G + I + + T.b.,
T.b. .
, , = = = .
, , , - . , , , () , , - , , , . , , . , , ( , , ; (, , , , . .) ).
. . (, NEW).
= + + .
.
() (. . 3).
. 3.
( )