! , . , , : ? , .
, , , . . . .
, , . 5 3? : , () , . -. , . 5 3 , 3 5. 5 3 : x + 3 = 5. . .
. 8: 4 . 4 x = 8.
- , ( ) . 5: 0 0 x = 5. , 0 5. , 0 0. , , .
, 0 - , . . (, , .) , 5: 0 , . , , .
: ? , 0 x = 0 . , x = 0, 0 0 = 0. , 0: 0=0? . x = 1. 0 1 = 0. ? , 0: 0 = 1? 0: 0 = 5, 0: 0 = 317 . .
, - . , 0: 0. , , . , . ( , 0 x = 0; , .)
. .
, , , : , , ? , . . , - . .
: